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- Bälter, Katarina, et al.
(författare)
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Web-based and mailed questionnaires : A comparison of response rates and compliance
- 2005
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Ingår i: Epidemiology. - Karolinska Inst, Dept Med Epidemiol & Biostat, SE-17177 Stockholm, Sweden. : Ovid Technologies (Wolters Kluwer Health). - 1044-3983 .- 1531-5487. ; 16:4, s. 577-579
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Tidskriftsartikel (refereegranskat)abstract
- Background: We assessed response rates and compliance for a printed questionnaire and a Web questionnaire in a Swedish population-based study and explored the influence of adding personalized feedback to the Web questionnaire. Methods: We assigned 875 subjects to I of 3 groups: printed questionnaire, plain Web questionnaire, or Web questionnaire with personalized feedback. The questionnaire had 2 parts, first a general section and then a dietary section. Results: The response rate for the general section was 64% for the printed questionnaire, compared with 50% for the Web questionnaire with feedback. For the dietary questionnaire, the rates were reversed, resulting in a total response rate for the dietary questionnaire that did not differ between printed and web questionnaire with feedback. Conclusions: Interactivity in the Web questionnaire increased compliance in completion of the second section of the questionnaire. Web questionnaires can be useful for research purposes in settings in which Internet access is high.
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- Chaix, Basile, et al.
(författare)
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Neighborhood socioeconomic deprivation and residential instability - Effects on incidence of ischemic heart disease and survival after myocardial inforction
- 2007
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Ingår i: Epidemiology. - : Ovid Technologies (Wolters Kluwer Health). - 1531-5487 .- 1044-3983. ; 18:1, s. 104-111
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Tidskriftsartikel (refereegranskat)abstract
- Background: Previous literature has shown that neighborhood socioeconomic position influences the risk of ischemic heart disease, but little is known about the mechanisms linking the residential context to ischemic heart disease incidence and mortality. We examined whether neighborhood socioeconomic position and neighborhood residential stability (as a determinant of social interaction patterns) have an influence on ischemic heart disease risk. Moreover, we investigated whether dissimilar contextual influences operate at different stages of the disease process, ie, on incidence, 1-day case-fatality, and long-term survival after acute myocardial infarction (MI). Methods: Using a large 27-year longitudinal cohort (baseline: 1 January 1996) defined in the Scania region, Sweden, we estimated multilevel survival models adjusted for individual sociodemographic factors and previous diseases of the persons. Results: After adjustment, multilevel survival models indicated that the incidence of ischemic heart disease increased with neighborhood socioeconomic deprivation but was only weakly associated with neighborhood residential instability (for high vs low residential instability, hazard ratio = 1.2; 95% credible interval = t.0-1.4). Conversely, beyond effects of individual and contextual socioeconomic circumstances and distance to the hospital, we saw a markedly higher I-day case-fatality (4.9; 1.8-15) and shorter survival time after MI among individuals still alive 28 days after MI (4.3; 1.2-17) in neighborhoods with a high versus low residential instability. Conclusions: Effects of residential instability on post-MI survival may be mediated by the lower availability of social support in residentially unstable neighborhoods, suggesting a new class of intermediate processes that should be taken into account when investigating contextual influences on ischemic heart disease. Moreover, dissimilar contextual effects may operate at various stages of the disease process (ie, on incidence, case-fatality, and survival after MI).
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- Ekholm Selling, Katarina, et al.
(författare)
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Hospitalizations in adolescence and early adulthood among Swedish men and women born preterm or small for gestational age
- 2008
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Ingår i: Epidemiology. - 1044-3983 .- 1531-5487. ; 19:1, s. 63-70
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Tidskriftsartikel (refereegranskat)abstract
- Background: Preterm birth and reduced intrauterine growth appear to be related to morbidity in childhood and later adulthood. We studied whether the risk of all-cause hospitalization in adolescence and early adulthood differed between individuals who were born preterm or small for gestational age (SGA) compared with those bom at term and appropriate for gestational age. Methods: Using Swedish registries, we followed 304,275 men and women born in 1973-1975 for any hospitalizations occurring in 1987-1996. Preterm birth was defined as <37 weeks of gestation and SGA as babies smaller than 2 standard deviations below the mean weight for gestational length, according to Swedish standards. We created 3 mutually exclusive categories: "preterm" (<37 weeks and not SGA), "SGA" (SGA and not preterm), and "both preterm and SGA." The comparison group was all term births not SGA. Childhood socioeconomic characteristics were accounted for in the analyses. Results: The overall risk of hospitalization was higher for men and women bom SGA (adjusted odds ratio = 1.16; 95% confidence interval = 1.12-1.21), for those born preterm (1.06; 1.02-1.10), and for those born both preterm and SGA (1.42; 1.26-1.59). In addition to higher risks for previously reported adverse health outcomes, such as neurodevelopment sequelae and congenital anomalies, men and women born SGA or preterm were more likely to be hospitalized due to unspecified symptoms. SGA also appeared to be associated with genitourinary diseases and drug use. Conclusions: Men and women born SGA or preterm were at higher risk for hospitalization during adolescence and early adulthood, with men and women born SGA more at risk than those bom preterm.
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