Table 1.
Characteristic information for the 3,010 study subjects.
| Case (N = 892) | Controls (N = 2,118) | Statistics | P | |
|---|---|---|---|---|
| Age | 59.3 ± 6.3 | 58.9 ± 8.1 | T = 1.2 | 0.23 |
| BMI | 25.9 ± 1.6 | 25.5 ± 1.6 | T = 6.3 | 4.93 × 10−10 |
| Gender (%) | ||||
| Male | 405 (45) | 970 (46) | ||
| Female | 487 (55) | 1148 (54) | χ2 = 0.03 | 0.87 |
| Site (%) | ||||
| hip | 519 (58) | 1224 (58) | ||
| knee | 373 (42) | 894 (42) | χ2 = 0.03 | 0.87 |
| Hypertension (%) | ||||
| Yes | 253 (28) | 585 (28) | ||
| No | 639 (72) | 1533 (72) | χ2 = 0.14 | 0.71 |
| Diabetes (%) | ||||
| Yes | 43 (5) | 95 (4) | ||
| No | 849 (95) | 2023 (96) | χ2 = 0.09 | 0.76 |
| Hyperlipidemia (%) | ||||
| Yes | 262 (30) | 523 (25) | ||
| No | 630 (70) | 1595 (75) | χ2 = 6.89 | 0.009 |
| Smoking (%) | ||||
| Yes | 156 (17) | 351 (17) | ||
| No | 736 (83) | 1767 (83) | χ2 = 0.31 | 0.58 |
| Alcohol (%) | ||||
| Yes | 128 (14) | 281 (13) | ||
| No | 764 (86) | 1837 (87) | χ2 = 0.54 | 0.46 |