Table 2.
Characteristics of the study population, stratified by case and control status, percentage (%), n = 26,680
| Characteristics | Category | Percentage | p value* | |
|---|---|---|---|---|
| Case n = 5336 |
Control n = 21,344 |
|||
| Sex | Male | 43.8 | 43.8 | Matched |
| Female | 56.2 | 56.2 | ||
| Age groups | 50–64 years | 27.5 | 27.5 | Matched |
| ≥65 years | 72.5 | 72.5 | ||
| Marital status | Married | 34.3 | 46.6 | <0.001 |
| Divorced | 22.0 | 13.8 | ||
| Widowed | 29.9 | 29.0 | ||
| Unmarried | 13.7 | 10.3 | ||
| Unknown | 0.1 | 0.2 | ||
| Charlson comorbidity index | 0 | 60.4 | 84.4 | <0.001 |
| 1–2 | 37.2 | 15.2 | ||
| 3–4 | 2.3 | 0.3 | ||
| ≥5 | 0.1 | 0.0 | ||
*p value of Pearson chi-square tests for comparison of distribution between cases and controls