Table 3.
General characteristics of cases and controls.
| Variables | n (%) or medians (25th–75th percentile) | P value | |
|---|---|---|---|
| Cases n = 17 | Control n = 85 | ||
| Age, years | 72.0 (62–80) | 72.0 (62–78) | 0.989 |
| Sex (%) | |||
| Male | 11 (64.7) | 55 (64.7) | 1 |
| Female | 6 (35.3) | 30 (35.3) | |
| Town | |||
| Kangcheng | 4 (23.5) | 32 (37.6) | 0.330 |
| Gaojiagou | 5 (29.4) | 28 (32.9) | |
| Caijiaya | 8 (47.1) | 25 (29.4) | |
| Serum tHcy, μmmol/L | 27.45 (19.70–32.81) | 20.71 (14.50–31.50) | 0.341 |
| ≤22.175 | 5 (29.4) | 46 (54.1) | 0.063 |
| >22.175 | 12 (70.6) | 39 (45.9) | |
| Serum folate, nmol/L | 6.92 (4.83–11.13) | 7.50 (5.55–13.49) | 0.396 |
| ≤7.375 | 10 (58.8) | 41 (48.2) | 0.425 |
| >7.375 | 7 (41.2) | 44 (51.8) | |
| Serum vitamin B12, pmol/L | 132.45 (95.06–198.84) | 149.64 (89.79–195.94) | 0.696 |
| ≤147.295 | 10 (58.8) | 41 (48.2) | 0.425 |
| >147.295 | 7 (41.2) | 44 (51.8) | |
| Current smoking (%) | |||
| Yes | 10 (58.8) | 74 (87.1) | 0.005 |
| No | 7 (41.2) | 11 (12.9) | |
| Current alcohol drinking (%) | |||
| Yes | 0 (0) | 14 (16.5) | 0.119 |
| No | 17 (100) | 71 (83.5) | |
| Tea drinking (%) | |||
| Yes | 0 (0) | 6 (7.1) | 0.586 |
| No | 17 (100) | 79 (92.9) | |
| Pesticide exposure (%) | |||
| Yes | 0 (0) | 6 (7.1) | 0.586 |
| No | 17 (100) | 79 (92.9) | |