Table 2 Risk factors of depressive symptoms trajectories (relative risk ratios and 95% confidence interval)
Baseline variable | Group | |
|---|---|---|
Increase | Late increase | |
Socio-demographic variables | ||
 Female | 1.60* (1.00–2.55) | 0.87 (0.61–1.24) |
 Age (Ref. < 70) | ||
  71–75 | 1.18 (0.76–1.85) | 0.97 (0.69–1.36) |
  76–80 | 1.46 (0.82–2.59) | 1.17 (0.75–1.81) |
  > 80 | 1.24 (0.46–3.35) | 1.07 (0.48–2.38) |
 Education (Ref. No education) | ||
  Some primary school | 0.85 (0.46–1.56) | 1.03 (0.64–1.72) |
  Primary school | 0.85 (0.42–1.69) | 0.78 (0.47–1.40) |
  Secondary / Matriculation | 0.66 (0.32–1.36) | 0.65 (0.40–1.23) |
  University or above | 0.88 (0.39–2.03) | 0.74 (0.43–1.37) |
 Marriage statues (Ref. Married or living in a married-like relationship) | ||
  Windowed/ Separated | 0.92 (0.55–1.56) | 0.91 (0.60–1.37) |
  Divorced | 4.35* (1.07–17.68) | 4.13* (1.25–13.66) |
  Single, never married | 2.01 (0.45–9.03) | 1.68 (0.47–6.01) |
 The quality of life | ||
  Physical Component | 0.93*** (0.90–0.95) | 0.94*** (0.92–0.96) |
  Mental Component | 0.91*** (0.87–0.95) | 0.95* (0.92–0.99) |
Health-related information | ||
 BMI | 1.03 (0.96–1.09) | 1.02 (0.97–1.07) |
 PASE | 1.00 (0.99–1.00) | 1.00 (0.99–1.00) |
 The number of chronic diseases | 1.20* (1.03–1.41) | 1.10 (0.97–1.25) |
 Cognitive function | 0.91* (0.85–0.98) | 0.94 (0.89–1.00) |