Table 1

Mean and SD for continuous measures and numbers and percentages (%) for dichotomous and categorical measures for the intervention (n=367) versus control group (n=363) and for completers (n=575) versus non-completers (n=155)

Study characteristicsTotal study population (n=730)
Intervention group (n=367)Control group (n=363)Completers (n=575)Non-completers (n=155)
Female, n (%)274 (74.7)277 (76.3)429 (74.6)122 (78.7)
Age (years), mean (SD)52.5 (4.8)52.3 (4.9)52.5 (4.9)52.0 (4.7)
Partner (yes), n (%)268 (73.0)281 (77.4)436 (75.8)113 (72.9)
Chronic diseases (yes), n (%)207 (59.1)217 (57.0)326 (56.7)98 (63.2)
Smoking (yes), n (%)38 (10.4)40 (11.0)55 (9.6)23 (14.8)
Education level, n (%)
 Low42 (11.4)32 (8.8)55 (9.6)19 (12.3)
 Intermediate100 (27.3)110 (30.3)162 (28.2)48 (31.0)
 High225 (61.3)221 (60.9)358 (62.3)88 (56.8)
Working hours per week, mean (SD)30.4 (7.3)29.8 (7.0)30.2 (6.6)30.0 (7.9)
Irregular working hours, n (%)
 Yes44 (12.0)52 (14.3)69 (12.0)28 (18.1)*
 No323 (88.0)311 (85.7)506 (88.0)127 (81.9)
  • * Significant difference (p=0.042) between completers and non-completers.

  • Differences between intervention and control group and between completers and non-completers were tested using independent t tests for continuous measures and Pearson's χ2 tests for dichotomous and categorical measures.

  • %, proportion of total group.