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Table 2 Characteristics of participants

From: A photograph of the researcher on the invitation letter did not affect the participation rate of a postal survey: a randomized study within a trial (SWAT)

 

With photograph n (%)

N = 4890

Without photograph n (%)

N = 4907

P-value

Participation ratea

682 (13.9)

667 (13.6)

0.611

Gender

678

660

 

 Females

390 (57.5)

368 (55.6)

0.515

Housing status

668

644

0.950

 Living alone

168 (25.1)

161 (25)

 

 Living with at least one more person

500 (74.9)

483 (75.0)

 

Education level according to CASMIN

650

630

0.234

 Lower secondary education

57 (8.8)

73 (11.6)

 

 Higher secondary education

352 (54.2)

325 (51.6)

 

 Tertiary education

241 (37.1)

232 (36.8)

 

Settlement pattern

661

646

0.582

 Cities

258 (39.0)

253 (39.2)

 

 Rural areas

217 (32.8)

226 (35.0)

 

 Towns and suburbs

186 (28.1)

167 (25.9)

 
 

N, mean (SD)

N, mean (SD)

 

Age in years

665

644

 
 

56.0 (17.0)

57.2 (16.4)

0.353

  1. CASMIN Comparative Analysis of Social Mobility in Industrial Nations
  2. aPrimary outcome