Comparison of baseline characteristics of participants who completed the study and participants who withdrew from the study after baseline measurements: The mean (SD) ages of those who completed the study and those who withdrew were 55.3 (14.6) years and 53.2 (17.6) years, respectively (P = .087).
| CHARACTERISTICS | COMPLETED STUDY, % N = 1046 | WITHDREW FROM STUDY, % N = 229 | PVALUE |
|---|---|---|---|
| Perceived health status | .001 | ||
| • Bad | 2.8 | 7.9 | |
| • Acceptable | 19.0 | 20.1 | |
| • Good | 36.1 | 30.1 | |
| • Very good | 31.4 | 26.6 | |
| • Excellent | 10.7 | 15.3 | |
| Highest education level | .854 | ||
| • Primary | 17.4 | 16.2 | |
| • Secondary | 45.2 | 42.4 | |
| • College (technical) | 14.2 | 17.5 | |
| • College (general) | 5.2 | 5.7 | |
| • University | 18.0 | 18.3 | |
| Sex | .289 | ||
| • Female | 64.4 | 68.1 | |
| Main activity | .001 | ||
| • Working | 41.7 | 39.7 | |
| • Studying | 1.6 | 3.5 | |
| • Retired | 39.4 | 35.8 | |
| • Unemployed | 2.5 | 5.2 | |
| • Keep house | 8.9 | 5.7 | |
| • Other | 5.8 | 8.3 | |
| • Declined to answer | 0.1 | 1.8 |