Table 2.
Comparison of clinical characteristics of advanced radiographic knee OA subjects in three study groups
| HAS | KNHANES | OAI | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Variables | Without pain (N = 11) |
With pain (N = 36) |
P value | Without pain (N = 214) |
With pain (N = 471) |
P value | Without pain (N = 33) |
With pain (N = 521) |
P value |
| Age (years), means ± SD | 76.8 ± 8.9 | 72.3 ± 6.8 | 0.09 | 72.2 ± 8.0 | 72.2 ± 7.8 | 0.71 | 70.3 ± 7.6 | 64.2 ± 8.7 | <.0001 |
| Female | 54.5 | 86.1 | 0.03 | 77.1 | 87.9 | 0.0003 | 48.5 | 52.4 | 0.66 |
| Diabetes | 9.0 | 11.1 | 0.85 | 15.8 | 19.7 | 0.23 | 12.5 | 9.1 | 0.52 |
| CVA | 0 | 5.5 | 0.42 | 1.8 | 4.2 | 0.12 | 3.1 | 3.3 | 0.95 |
| MI | 0 | 5.5 | 0.42 | 4.6 | 5.3 | 0.73 | 3.2 | 1.9 | 0.63 |
| Hyperlipidemia | 0 | 0 | NA | 11.2 | 16.5 | 0.07 | NA | NA | NA |
| Osteoporosis | 9.0 | 27.7 | 0.2 | 14.2 | 27.6 | 0.0041 | 24.2 | 11.4 | 0.03 |
|
BMI (kg/m2), means ± SD |
26.3 ± 3.8 | 26.3 ± 4.6 | 0.98 | 25.0 ± 3.8 | 25.2 ± 3.8 | 0.58 | 29.2 ± 4.1 | 29.8 ± 4.5 | 0.5 |
| Smoker | 18.1 | 25.0 | 0.64 | 25.8 | 16.2 | 0.0033 | 37.5 | 49.7 | 0.18 |
| Alcohol | 45.4 | 38.8 | 0.7 | 63.3 | 60.4 | 0.47 | 78.1 | 82.2 | 0.56 |
| Low education | 100 | 94.4 | 0.42 | 85.9 | 94.9 | <.0001 | 96.9 | 95.2 | 0.66 |
| Low income | 66.6 | 59.3 | 0.69 | 78.2 | 81.3 | 0.33 | 80.6 | 78.6 | 0.79 |
| Marriage | 45.4 | 38.8 | 0.7 | 53.7 | 53.7 | 0.1 | 78.1 | 66.8 | 0.19 |
All data are presented as percentages unless specified otherwise. Continuous variables were tested using two sample t-test and categorical variables using chi-square test. CVA Cerebrovascular accident, MI Myocardial infarction, BMI Body mass index