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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.