Table 1.
Comparisons of general characteristics between controls and cases.
| Variables | Control (n=136) | Case (n=170) | t/χ2 | P value |
|---|---|---|---|---|
| Sex | 1.398 | 0.237 | ||
| Male | 70 (51.5%) | 99 (58.2%) | ||
| Female | 66 (48.5%) | 71 (41.8%) | ||
| Age (y) | 47.0±13.3 | 48.0±12.5 | −0.691 | 0.490 |
| Smoking | 0.563 | 0.453 | ||
| Yes | 16 (11.8%) | 25 (14.7%) | ||
| No | 120 (88.2%) | 145 (85.3%) | ||
| Drinking | 4.796 | 0.029 | ||
| No | 64 (47.1%) | 59 (34.7%) | ||
| Yes | 72 (52.9%) | 111 (65.3%) | ||
| Exercise/week | 0.428 | 0.934 | ||
| None | 64 (47.1%) | 86 (50.6%) | ||
| One | 30 (22.1%) | 36 (212%) | ||
| Twice | 22 (16.2%) | 26 (15.3%) | ||
| Everyday | 20 (14.7%) | 22 (12.9%) | ||
| Salt intake | 2.205 | 0.332 | ||
| Low | 48 (35.3%) | 56 (32.9%) | ||
| Moderate | 68 (50.0%) | 97 (57.1%) | ||
| High | 20 (14.7%) | 17 (10.0%) | ||
| Education | 0.444 | 0.979 | ||
| No | 13 (9.6%) | 13 (7.6%) | ||
| Primary | 25 (18.4%) | 31 (18.3%) | ||
| Middle | 45 (33.1%) | 60 (34.3%) | ||
| High | 35 (25.7%) | 43 (25.5%) | ||
| Colleage | 18 (13.2%) | 23 (13.4%) | ||
| Marriage | 1.340 | 0.855 | ||
| Unmarried | 52 (38.2%) | 62 (35.6%) | ||
| Married | 80 (58.8%) | 103 (60.6%) | ||
| Others | 4 (2.9%) | 5 (3.0%) | ||
| Region | 0.080 | 0.778 | ||
| Rural | 38 (27.9%) | 50 (29.4%) | ||
| Urban | 98 (72.1%) | 120 (70.6%) |