| Remarried (n = 224) | Not-remarried (n = 2452) | Two-sided p value |
---|---|---|---|
Age at study entry | Â | Â | Â |
mean age (± SD) | 61.8 (± 9.7) | 69.9 (± 11.6) | < 0.001 |
Sex | Â | Â | Â |
   male | 126 (56.3%) | 744 (30.3%) | < 0.001 |
   female | 98 (43.8%) | 1708 (69.7%) |  |
Race/ethnicity | Â | Â | Â |
   white/Caucasian | 189 (84.4%) | 2023 (82.5%) | 0.482 |
   others | 35 (15.6%) | 429 (17.5%) |  |
Education | Â | Â | Â |
   none/basic/secondary | 70 (31.3%) | 878 (35.8%) | 0.176 |
   high school or higher | 154 (68.8%) | 1574 (64.2%) |  |
Number of cigarettes smoked at study entry | Â | Â | Â |
   none | 186 (83.0%) | 2142 (87.4%) | 0.176 |
   1-20 cigarettes/day | 31 (13.8%) | 258 (10.5%) |  |
   > 20 cigarettes/day | 7 (3.1%) | 52 (2.1%) |  |
COPD onset during follow-up | Â | Â | Â |
 | 12 (5.4%) | 171 (7.0%) | 0.359 |