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Table 2 Bivariate and multivariate associations of sociodemographic and health-(care-)related factors with HISB on the Internet

From: Sociodemographic and health-(care-)related characteristics of online health information seekers: a cross-sectional German study

Explanatory variables OR [95% CI] Bivariate logistic regressions Multivariate model I Multivariate model II Final multivariate model
n = 1,024 n = 1,420 n = 1,002
R2 = 0.129 R2 = 0.032 R2 = 0.151
Gender
Male (ref.) 1.00 (ref.) 1.00 (ref.)   1.00 (ref.)
Female 1.31 [1.05-1.63] 1.63 [1.20-2.21]   1.52 [1.12-2.08]
Age (years)
18-29 (ref.) 1.00 (ref.) 1.00 (ref.)   1.00 (ref.)
30-44 1.47 [1.09-2.00] 1.08 [0.69-1.69]   0.98 [0.61-1.55]
45-59 1.59 [1.18-2.15] 0.95 [0.63-1.45]   0.88 [0.57-1.36]
60 and over 1.21 [0.86-1.69] 0.74 [0.45-1.22]   0.67 [0.40-1.12]
Social class
Lower (ref.) 1.00 (ref.) 1.00 (ref.)   1.00 (ref.)
Middle 2.12 [1.57-2.86] 1.98 [1.40-2.80]   2.24 [1.56-3.20]
Upper 3.83 [2.75-5.34] 3.51 [2.38-5.17]   4.04 [2.65-6.17]
Migration background
No migration background (ref.) 1.00 (ref.) 1.00 (ref.)   1.00 (ref.)
Own migration background 0.55 [0.40-0.76] 0.53 [0.36-0.76]   0.56 [0.38-0.82]
Parental migration background 0.96 [0.67-1.37] 1.09 [0.72-1.66]   1.17 [0.75-1.81]
Relationship status
Unmarried and no partner (ref.) 1.00 (ref.) 1.00 (ref.)   1.00 (ref.)
Married or partner 1.75 [1.33-2.29] 1.86 [1.20-2.87]   1.87 [1.19-2.93]
Parental status
No children <15 years (ref.) 1.00 (ref.) 1.00 (ref.)   1.00 (ref.)
1-2 children <15 years 1.04 [0.80-1.34] 1.00 [0.71-1.40]   1.08 [0.76-1.53]
3 or more children <15 years 0.38 [0.23-0.64] 0.56 [0.29-1.07]   0.67 [0.35-1.31]
Employment status
Unemployed (ref.) 1.00 (ref.) 1.00 (ref.)   1.00 (ref.)
Full time 1.26 [0.98-1.61] 1.00 [0.69-1.45]   1.06 [0.72-1.55]
Part time 1.31 [0.96-1.79] 0.85 [0.56-1.31]   0.89 [0.57-1.38]
Town size (inhabitants)
Under 20,000 (ref.) 1.00 (ref.) 1.00 (ref.)   1.00 (ref.)
Under 100,000 1.13 [0.70-1.81] 0.96 [0.55-1.67]   0.97 [0.55-1.72]
Under 500,000 1.14 [0.72-1.80] 1.07 [0.62-1.84]   1.01 [0.58-1.78]
500,000 or more 1.92 [1.20-3.07] 1.61 [0.93-2.81]   1.61 [0.91-2.85]
Chronic diseases/conditions
No (ref.) 1.00 (ref.)   1.00 (ref.) 1.00 (ref.)
Yes 1.53 [1.2-1.96]   1.37 [1.04-1.81] 1.17 [0.84-1.65]
Self-perceived health
Very good/good (ref.) 1.00 (ref.)   1.00 (ref.) 1.00 (ref.)
Moderate 1.16 [0.86-1.58]   0.92 [0.66-1.29] 1.09 [0.73-1.61]
Poor/very poor 1.61 [0.89-2.91]   1.31 [0.65-2.63] 1.38 [0.61-3.16]
Health insurance status
Statutory (ref.) 1.00 (ref.)   1.00 (ref.) 1.00 (ref.)
Private 1.22 [0.91-1.64]   1.34 [0.99-1.81] 0.95 [0.64-1.42]
Use of health care services
None (ref.) 1.00 (ref.)   1.00 (ref.) 1.00 (ref.)
Low 1.18 [0.92-1.52]   1.09 [0.84-1.41] 1.01 [0.74-1.38]
High 1.99 [1.50-2.64]   1.78 [1.31-2.44] 1.73 [1.19-2.51]
  1. ref. = reference category, OR = odds ratio, CI = confidence interval, numbers in bold =p< .05.