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Table 1 Predictors of non-response to questionnaires sent 1 year after preventive health counseling in general practice

From: The impact of non-responders on health and lifestyle outcomes in an intervention study

  

Total

Primary non-responders

Primary responders

  

N = 495

N = 179

N = 316

  

n

N (%)

N (%)

OR (95% CI)

OR (95% CI)*

Socio-demographic factors at baseline

Sex

     

 Male

132

59 (33%)

73 (23%)

1.64 (1.06-2.50)

1.69 (1.09-2.63)

 Female

363

120

243

1

1

Age

     

 ≤30 years

153

66 (37%)

87 (28%)

1.51 (1.01-2.13)

1.44 (0.95-2.20)

 >30 years

342

113

229

1

1

Civil status

     

 Single

143

56 (31)

87 (28)

1.17 (0.76-1.78)

1.03 (0.6-1.59)

 Cohabitant

347

123

224

1

1

School education

     

 Primary and lower secondary school

324

119 (66%)

205 (65%)

1.07 (0.72-1.61)

1.01 (0.66-1.54)

 Graduated

171

60

111

1

1

Professional training

     

 No

140

56 (31%)

84 (27%)

1.26 (0.82-1.91)

120 (0.77-1.87)

 Yes

355

123

232

1

 

Health-related questions at baseline

Self-rated health

     

 Bad

71

28 (16%)

43 (14%)

1.18 (0.68-2.03)

1.13 (0.60-2.13)

 Good

424

151

273

1

1

PCS-SF12

     

 < median (low)

241

79 (45%)

163 (52%)

0.75 (0.51-1.11)

0.80 (0.52-1.23)

 > median (high)

242

95

147

1

1

MCS-SF12 (N = 483)

     

 < median (low)

241

93 (53%)

148 (48%)

1.25 (0.85-1.84)

1.23 (0.84-1.96)

 > median (high)

242

81

161

1

1

Number of problems at baseline (0–33)

     

 Many problems (10+)

231

82 (47%)

149 (48%)

0.97 (0.66-1.43)

0.91 (0.59-1.38)

 Fewer problems (7–9)

254

92

162

1

1

Medical contacts per year

     

 >5

224

76 (43%)

148 (47%)

0.84 (0.57-1.24)

0.82 (0.54-1.24)

 ≤5

269

102

167

1

1

Smoking

     

 Yes

265

102 (59%)

163 (52%)

1.29 (0.87-1.91)

1.47 (0.98-2.19)

 No

220

72

148

1

1

Factors related to the intervention study

Randomized toIntervention

240

88 (49%)

152 (48%)

1.04 (0.71-1.53)

0.97 (0.66-1.42)

Control

255

91

164

1

1

Number of included patients per physician

     

 Few (≤13)

115

49 (27%)

66 (21%)

1.43 (0.91-2.23)

1.39 (0.88-2.18)

 

 Many (>13)

380

130

250

1

1

  1. *Adjusted for the other variables in table.
  2. Proportions and odds ratios (OR).