| 1. |
- Beeres, Dorien Tecla, et al.
(författare)
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Child–adult contract for prevention of tobacco use : "as-treated" analysis of a cluster randomized controlled trial (the TOPAS study) at 3-year follow-up
- 2024
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Ingår i: Prevention Science. - : Springer Nature. - 1389-4986 .- 1573-6695. ; 25, s. 175-192
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Tidskriftsartikel (refereegranskat)abstract
- To estimate the effect of a 3-year commitment to remain tobacco free on tobacco uptake among high school students in Sweden. The commitment is developed in the form of a contract between a child and a significant adult, constituting the core component of Tobacco-free Duo (T-Duo), a Swedish school-based tobacco prevention program. Secondary analysis of data from a cluster randomized controlled trial. Participants were 586 students in high schools assigned to the intervention arm of T-Duo. At inception, participants attended grade 7 (i.e., age 12–13). Only students who were tobacco naïve at baseline for the respective outcome and participated in all follow-ups were included. The exposure was defined as signing a 3-year contract with a significant adult, categorized as “stable contract” (3 years contract with the same contract partner), “unstable” (signed a contract sometime during follow-up but this was not sustained over time and/or with the same partner), and “no contract” at all during the intervention period. The primary outcome was having never tried cigarette smoking at the end of grade 9. Exposure and outcomes were self-reported in yearly questionnaires. Of 586 students, 321 (55%) held a stable contract, 204 (35%) an unstable contract, and 61 (10%) did not sign a contract at all. At the end of grade 9 (age 15–16), the relative risk (RR) to remain cigarette free was 1.11 (95% CI 1.00–1.22) (Number Needed to Treat = 10) among students in any type of contract compared to students that did not write a contract at all. The RRs for remaining tobacco free (secondary outcomes) ranged from 1.07 (0.98–1.16) for regular snus use to 1.16 (1.00–1.35) for any type of tobacco use. A commitment to remain tobacco free through a child–adult contract seems to exert a preventive effect on the uptake of tobacco use among Swedish adolescents over 3 school years. The current findings apply to a selected sample of both schools and students.Registration: Current Controlled Trials ISRCTN52858080 Date: January 4, 2019, retrospectively registered.
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| 2. |
- Galanti, Maria Rosaria, et al.
(författare)
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Tobacco-Free Duo Adult-Child Contract for Prevention of Tobacco Use Among Adolescents and Parents : Protocol for a Mixed-Design Evaluation
- 2020
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Ingår i: JMIR Research Protocols. - : JMIR Publications Inc.. - 1929-0748. ; 9:10
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Universal tobacco-prevention programs targeting youths usually involve significant adults, who are assumed to be important social influences. Commitment not to use tobacco, or to quit use, as a formal contract between an adolescent and a significant adult is a preventive model that has not been widely practiced or explored and has been formally evaluated even less. In this paper, we present the rationale and protocol for the evaluation of the Swedish Tobacco-free Duo program, a multicomponent school-based program the core of which rests on a formal agreement between an adolescent and an adult. The adolescent's commitment mainly concerns avoiding the onset of any tobacco use while the adult commits to support the adolescent in staying tobacco free, being a role model by not using tobacco themselves.OBJECTIVE: To assess (1) whether Tobacco-free Duo is superior to an education-only program in preventing smoking onset among adolescents and promoting cessation among their parents, (2) whether exposure to core components (adult-child agreement) entails more positive effects than exposure to other components, (3) the impact of the program on whole school tobacco use, (4) potential negative side effects, and (5) school-level factors related to fidelity of the program's implementation.METHODS: A mixed-design approach was developed. First, a cluster randomized controlled trial was designed with schools randomly assigned to either the comprehensive multicomponent program or its educational component only. Primary outcome at the adolescent level was identified as not having tried tobacco during the 3-year junior high school compulsory grades (12-15 years of age). An intention-to-treat cohort-wise approach and an as-treated approach complemented with a whole school repeated cross-sectional approach was devised as analytical methods of the trial data. Second, an observational study was added in order to compare smoking incidence in the schools participating in the experiment with that of a convenience sample of schools that were not part of the experimental study. Diverse secondary outcomes at both adolescent and adult levels were also included.RESULTS: The study was approved by the Umeå Regional Ethics Review Board (registration number 2017/255-31) in 2017. Recruitment of schools started in fall 2017 and continued until June 2018. In total, 43 schools were recruited to the experimental study, and 16 schools were recruited to the observational study. Data collection started in the fall 2018, is ongoing, and is planned to be finished in spring 2021.CONCLUSIONS: Methodological, ethical, and practical implications of the evaluation protocol were discussed, especially the advantage of combining several sources of data, to triangulate the study questions. The results of these studies will help revise the agenda of this program as well as those of similar programs.TRIAL REGISTRATION: International Standard Randomized Controlled Trial Number (ISRCTN) 52858080; https://doi.org/10.1186/ISRCTN52858080.INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/21100.
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| 3. |
- Pulkki-Brännström, Anni-Maria, et al.
(författare)
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Protocol for the evaluation of cost-effectiveness and health equity impact of a school-based tobacco prevention programme in a cluster randomised controlled trial (the TOPAS study)
- 2021
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Ingår i: BMJ Open. - : BMJ Publishing Group Ltd. - 2044-6055. ; 11:8
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Tidskriftsartikel (refereegranskat)abstract
- Introduction: Despite a long-term downward trend in smoking prevalence, tobacco remains the number one risk factor for death and disability in Sweden. Globally, tobacco use generates a substantial economic burden for health systems and is also a major driver of socioeconomic inequalities in health. This article describes the planned cost-effectiveness and health equity impact evaluation of a multicomponent school-based programme to prevent the onset of tobacco use in adolescents.Methods and analysis: Cost-effectiveness of the multicomponent Tobacco-Free Duo programme will be evaluated against the educational component of the same programme only. An incremental cost-effectiveness ratio (ICER) will be calculated in terms of the cost per case prevented using the trial primary outcome and within-trial payer costs. If the ICER is negative, an incremental net benefit ratio will be calculated. Robustness of the results will be assessed through one-way sensitivity analyses. The slope index of inequality will be computed to assess the potential impact of the Tobacco-free Duo programme on education-related inequalities in the onset of smoking and in adult smoking cessation, comparing the two trial arms.Ethics and dissemination: Ethical approval was obtained from the Regional Ethics Review Board, Umeå (registration number 2017/255-31). The Public Health Agency of Sweden commissioned the study. The findings will be disseminated internationally within academia and to national and local policy-makers.Trial registration number: ISRCTN52858080; Pre-results.
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| 4. |
- Beeres, D., et al.
(författare)
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Evaluation of the Swedish school-based program “tobacco-free DUO” in a cluster randomized controlled trial (TOPAS study). Results at 2-year follow-up
- 2022
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Ingår i: Preventive Medicine. - : Elsevier BV. - 0091-7435 .- 1096-0260. ; 155
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Tidskriftsartikel (refereegranskat)abstract
- Friends' and parents' tobacco use are strong predictors of tobacco uptake among adolescents, however the effectiveness of interventions based on public commitments and agreements to remain tobacco-free are not established. Here, we evaluated the effectiveness of the school-based Swedish program Tobacco-Free Duo (T-Duo) in preventing adolescents from initiating tobacco use (TOPAS study). T-Duo is a multi-component intervention witha formal agreement between a student and an adult partner to remain tobacco-free during the entire 3-year study period as core component. The standardized educational component of the same program was used as comparator (control). Primary outcome was the probability to “remain a non-user” of i) cigarettes and secondary outcomes ii) other types of tobacco at second (21-month) follow-up. Analysis was conducted according to Intention To Treat. In total 1776 adolescents (51% female) aged 12–13 in grade 7 from 34 participating high schools in Sweden were included at baseline in 2018, of which 1489 were retained after 21 months. The Risk Ratio (RR) of not having tried cigarettes 21-months after initiation of the intervention was 1.03(CI 0.98–1.08), Bayes Factor(BF) = 0.93, Absolute Risk Difference(ARD) = 3.1%. Similar associations were found for never smoked a whole cigarette and never use of other tobacco/nicotine products. There was a minimal reduction of tobacco use initiation among Swedish adolescents assigned to a multi-component intervention (T-Duo) compared to those assigned to standardized classroom education after 2 schoolyears. However, for most outcomes' findings were inconclusive and not reliably different from zero. Trial registration: ISRCTN5285808 (doi:https://doi.org/10.1186/ISRCTN52858080); Study protocol: DERR1-https://doi.org/10.2196/21100. Registration: Current Controlled Trials ISRCTN52858080 Date: January 4, 2019, retrospectively registered. Protocol: Galanti, M.R., Pulkki-Brännström, A.-M., Nilsson, M., 2020. Tobacco-free duo adult-child contract for prevention of tobacco use among adolescents and parents: protocol for a mixed-design evaluation. JMIR Res. Protoc. 9, e21100. doi:10.2196/21100. © 2021
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| 5. |
- Nilsson, Maria, 1957-, et al.
(författare)
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Topas - tobakspreventivt arbete i skolan. Slutrapport : en utvärdering av det ANDT-förebyggande programmet Tobaksfri duo
- 2022
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- I Sverige har tobaksförebyggande program med ungdomar som målgrupp under många år initierats, utvecklats och drivits av kommuner, regioner, och den ideella sektorn. Antalet vetenskapliga studier om tobaksförebyggande arbete i landet som publicerats i vetenskapliga tidskrifter är mycket få och har främst genomförts med en kvasiexperimentell design. Tobaksfri duo (T-Duo) har spridits i landet och önskemål har uttryckts om en utvärdering med metodik som ger högre evidensgrad jämfört med de studier som genomförts tidigare. Genom Topasprojektet har en sådan utvärdering av användningen av programmets kärnkomponenter möjliggjorts. Studien har genomförts av Umeå universitet och Karolinska Institutet på uppdrag av Folkhälsomyndigheten. Den hade en blandad design: 1) en klusterrandomiserad kontrollerad studie (CRCT) där skolor tilldelades programmet T-Duos sex kärnkomponenter eller en minimal komponent i form av Strukturerad undervisning, 2) en observationsstudie där programskolor jämfördes med skolor i en extern referensgrupp samt 3) en hälsoekonomisk utvärdering av programmets kostnadseffekt.Studiens övergripande syfte var att utvärdera effekterna och kostnaderna av programmet T-Duos sex kärnkomponenter genom att besvara följande specifika frågeställningar:Påverkas ungas tobaksdebut och tobaksanvändning av programmet? - d.v.s. är den förebyggande effekten större om man arbetar med programmet jämfört med en minimal komponent, alternativt ordinarie ANDT-undervisning i skolan?Påverkar deltagande i programmet vårdnadshavares tobaksbruk?Har graden av implementering av programmet betydelse för effekten?Är effekterna sådana att programkostnaderna är motiverade?Resultaten från studien visar att det fullständiga programmet T-Duo förknippas med en måttlig förebyggande effekt på högstadieelevers tobaksdebut (cirka 8 % större sannolikhet att förbli rökfria efter tre år), jämfört med om man enbart bedrev undervisning om tobak enligt programmet som ingick i Topas kontrollgrupp Undervisningsskolor (U-skolor). Resultaten kan dock ha påverkats av vissa systematiska fel, dels bortfall, dels beroende på självrapportering.Kontraktet som skrevs mellan ett barn och en vuxen 18 år eller äldre som barnet själv valde som vuxenpartner i T-Duo visade sig vara en effektiv komponent om kontraktet kunde upprätthållas under samtliga år. Komponenten innehåller tre delar kopplat till kontraktet, i) dels en möjlighet till stöd från en vuxen som barnet själv valt, att barnet ii) vid kontraktsskrivning gör ett åtagande inför andra om att man inte ska använda tobak under de kommande tre åren och slutligen iii) möjligheten för barnet att delta i utlottning av mindre priser och till rabatter (på till exempel skolfiket).Resultaten indikerade också att T-Duo kan påverka tobaksbruk på gruppnivå, det vill säga på skolnivå, på ett positivt sätt över tid. Med andra ord att alla elever på en skola som jobbade med T-Duo påverkades av programmet och inte bara de som deltog.Vad gällde vårdnadshavare (VH) i T-skolor sågs en möjlig effekt avseende tobaksstopp, det vill säga att de få deltagare som använde tobak i början av studien och som var kvar i slutet slutade använda tobak i större utsträckning än föräldrar i skolor lottade till enbart undervisningskomponenten. Dock måste resultaten tolkas med stor försiktighet på grund av det låga antalet VH som svarade på enkäten. Av denna anledning är det inte möjligt att säga om VH som tecknade kontrakt med sina barn hade större sannolikhet att förbli tobaksfria eller inte, eftersom andelen tobaksbrukare i gruppen som tecknade kontraktet med sina barn redan från början var mycket låg och betydligt lägre än bland resterande VH.Mycket få skolor hade implementerat programmet T-Duo helt enligt manualen för studien. Implementeringen var oftast måttlig, dvs att man hade genomfört mer än två kärnkomponenter enligt manualen, dock inte alla. Graden av implementering påverkade dock inte resultaten.I beräkningen av kostnadseffektivitet relaterades skillnaden i kostnader mellan T-skolor och U-skolor till den beräknade effekten i termer av hur många fler barn som förblev rökfria på grund av programmet. Det treåriga programmet kostade 785 kr per exponerat barn på T-skolorna och endast strukturerad undervisning kostade 491 kr per barn på U-skolorna. T-Duo kostade därmed 294 kr mer per barn jämfört med endast Strukturerad undervisning och kostnadseffektiviteten uppskattades till 5 066 kr för varje ytterligare barn som var rökfri i slutet på årskurs nio. Om effekten kvarstår fram till vuxen ålder representerar T-duo en mycket bra användning av resurserna i förhållande till framtida konsekvenser på hälsan som vuxen. Osäkerheten rörande programeffekten och om effekten kommer att bestå är avgörande för denna slutsats.
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| 6. |
- Pulkki-Brännström, Anni-Maria, et al.
(författare)
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Cost and cost effectiveness of long-lasting insecticide-treated bed nets - a model-based analysis
- 2012
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Ingår i: Cost Effectiveness and Resource Allocation. - : Springer Science and Business Media LLC. - 1478-7547. ; 10, s. 5-
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: The World Health Organization recommends that national malaria programmes universally distribute long-lasting insecticide-treated bed nets (LLINs). LLINs provide effective insecticide protection for at least three years while conventional nets must be retreated every 6-12 months. LLINs may also promise longer physical durability (lifespan), but at a higher unit price. No prospective data currently available is sufficient to calculate the comparative cost effectiveness of different net types. We thus constructed a model to explore the cost effectiveness of LLINs, asking how a longer lifespan affects the relative cost effectiveness of nets, and if, when and why LLINs might be preferred to conventional insecticide-treated nets. An innovation of our model is that we also considered the replenishment need i.e. loss of nets over time.METHODS: We modelled the choice of net over a 10-year period to facilitate the comparison of nets with different lifespan (and/or price) and replenishment need over time. Our base case represents a large-scale programme which achieves high coverage and usage throughout the population by distributing either LLINs or conventional nets through existing health services, and retreats a large proportion of conventional nets regularly at low cost. We identified the determinants of bed net programme cost effectiveness and parameter values for usage rate, delivery and retreatment cost from the literature. One-way sensitivity analysis was conducted to explicitly compare the differential effect of changing parameters such as price, lifespan, usage and replenishment need.RESULTS: If conventional and long-lasting bed nets have the same physical lifespan (3 years), LLINs are more cost effective unless they are priced at more than USD 1.5 above the price of conventional nets. Because a longer lifespan brings delivery cost savings, each one year increase in lifespan can be accompanied by a USD 1 or more increase in price without the cheaper net (of the same type) becoming more cost effective. Distributing replenishment nets each year in addition to the replacement of all nets every 3-4 years increases the number of under-5 deaths averted by 5-14% at a cost of USD 17-25 per additional person protected per annum or USD 1080-1610 per additional under-5 death averted.CONCLUSIONS: Our results support the World Health Organization recommendation to distribute only LLINs, while giving guidance on the price thresholds above which this recommendation will no longer hold. Programme planners should be willing to pay a premium for nets which have a longer physical lifespan, and if planners are willing to pay USD 1600 per under-5 death averted, investing in replenishment is cost effective.
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| 7. |
- Wolff, Claudia Anna, et al.
(författare)
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Cost and cost-effectiveness of bed nets : a model-based analysis of long-lasting insecticide-treated nets (LLINs)
- 2013
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- The World Health Organization recommends that national malaria programs universally distribute long-lasting insecticide-treated bed nets (LLINs). We construct a model to explore the cost effectiveness of LLINs, asking how a longer lifespan affects the relative cost effectiveness of nets, and if, when and why LLINs might be preferred to conventional insecticide-treated nets. We model the choice of net over a 10-year period to facilitate the comparison of nets with different lifespans and replenishment need over time. One-way sensitivity analysis is conducted to explicitly compare the differential effect of changing parameters such as price, lifespan, usage and replenishment need. Our results support the World Health Organization recommendation to distribute only LLINs, while giving guidance on the price thresholds above which this recommendation will no longer hold. Program planners should be willing to pay a premium for nets which have a longer physical lifespan, and if planners are willing to pay USD 1600 per under-5 death averted, investing in replenishment is cost effective.
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| 8. |
- Hambraeus, Johan, 1959-
(författare)
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Interventional pain management focused on zygapophysial joint pain : a health-economic evaluation
- 2023
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The pain-system is a central mechanism in our life. Chronic pain is one of the major causes of impaired health-related quality of life according to the World Health Organization’s “Global Burden of Disease”-studies. Zygapophysial joint pain has been shown to account for the pain in 30% - 50% of patients with chronic pain. There are several well-established, evidence-based methods to treat zygapophysial joint pain in the cervical and lumbar regions.This thesis originates from this and starts by exploring whether the treatment of zygapophysial joint pain can improve health-related quality of life. This thesis describes methods for the diagnosis and treatment of zygapophysial joint pain in the thoracic region that can be applied to the treatment of all pain-foci localized to the zygapophysial joints. I show that the health-related quality of life was significantly improved after treatment, and that the clinical methods used for treating thoracic pain were similar to the methods that have been established previously for cervical and lumbar pain.In order to better understand the patients’ experiences we performed qualitative interviews with patients who underwent diagnostic tests and treatments. The overall theme revealed by these interviews was that of empowerment, in which the patients were empowered by the process of diagnostic tests and treatments.The next question was whether the method was cost-effective or not. In the first cost-effectiveness analysis, the patients served as their own controls and we evaluated the results against the limits set by the Swedish national board of health and welfare. The results showed that it was cost-effective in the moderate to low range.Finally, we compared the treatment to the “gold standard” for pain management in Sweden; i.e.pain rehabilitation. We mimicked a randomized controlled trial by using propensity score weighting to compare 254 patients agains 15,357 patients registered in the Swedish National Register of Pain Rehabilitation. The results showed that interventional pain management was cost-effective in the moderate (12 months after treatment) to low (≥24 months after) range whereas pain rehabilitation was in the very high range (after 12 months) and became cost-effective in the high range after 24 months of treatment. Currently, interventional pain management accounts for just 2% of all specialized pain management procedures in Sweden. If this could be increased to 25%, it may be possible to save 106 million SEK annually, while simultaneously gain 14 quality adjusted life years of health. If an interventional pain assessment is performed early in the process, treatable patients could be directed toward interventional treatment and away from interdisciplinary pain management programs, with the potential for further reductions in costs.
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| 9. |
- Batura, Neha, et al.
(författare)
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Highlighting the evidence gap : how cost-effective are interventions to improve early childhood nutrition and development?
- 2015
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Ingår i: Health Policy and Planning. - : Oxford University Press. - 0268-1080 .- 1460-2237. ; 30:6, s. 813-821
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Forskningsöversikt (refereegranskat)abstract
- There is growing evidence of the effectiveness of early childhood interventions to improve the growth and development of children. Although, historically, nutrition and stimulation interventions may have been delivered separately, they are increasingly being tested as a package of early childhood interventions that synergistically improve outcomes over the life course. However, implementation at scale is seldom possible without first considering the relative cost and cost-effectiveness of these interventions. An evidence gap in this area may deter large-scale implementation, particularly in low- and middle-income countries. We conduct a literature review to establish what is known about the cost-effectiveness of early childhood nutrition and development interventions. A set of predefined search terms and exclusion criteria standardized the search across five databases. The search identified 15 relevant articles. Of these, nine were from studies set in high-income countries and six in low- and middle-income countries. The articles either calculated the cost-effectiveness of nutrition-specific interventions (n = 8) aimed at improving child growth, or parenting interventions (stimulation) to improve early childhood development (n = 7). No articles estimated the cost-effectiveness of combined interventions. Comparing results within nutrition or stimulation interventions, or between nutrition and stimulation interventions was largely prevented by the variety of outcome measures used in these analyses. This article highlights the need for further evidence relevant to low- and middle-income countries. To facilitate comparison of cost-effectiveness between studies, and between contexts where appropriate, a move towards a common outcome measure such as the cost per disability-adjusted life years averted is advocated. Finally, given the increasing number of combined nutrition and stimulation interventions being tested, there is a significant need for evidence of cost-effectiveness for combined programmes. This too would be facilitated by the use of a common outcome measure able to pool the impact of both nutrition and stimulation activities.
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| 10. |
- Candio, Paolo, et al.
(författare)
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Copula Models for Addressing Sample Selection in the Evaluation of Public Health Programmes : An Application to the Leeds Let’s Get Active Study
- 2021
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Ingår i: Applied Health Economics and Health Policy. - : Springer Nature. - 1175-5652 .- 1179-1896. ; 19:3, s. 305-312
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Tidskriftsartikel (refereegranskat)abstract
- Sample selectivity is a recurrent problem in public health programmes and poses serious challenges to their evaluation. Traditional approaches to handle sample selection tend to rely on restrictive assumptions. The aim of this paper is to illustrate a copula-based selection model to handle sample selection in the evaluation of public health programmes. Motivated by a public health programme to promote physical activity in Leeds (England), we describe the assumptions underlying the copula selection, and its relative advantages compared with commonly used approaches to handle sample selection, such as inverse probability weighting and Heckman’s selection model. We illustrate the methods in the Leeds Let’s Get Active programme and show the implications of method choice for estimating the effect on individual’s physical activity. The programme was associated with increased physical activity overall, but the magnitude of its effect differed according to adjustment method. The copula selection model led to a similar effect to the Heckman’s approach but with relatively narrower 95% confidence intervals. These results remained relatively similar when different model specifications and alternative distributional assumptions were considered. The copula selection model can address important limitations of traditional approaches to address sample selection, such as the Heckman model, and should be considered in the evaluation of public health programmes, where sample selection is likely to be present.
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