Table 2.
Summary demographic data for questionnaire respondents
| No. of targeted cases | No. of excluded cases | Total no. | |
|---|---|---|---|
| Age (years) | 56.1 ± 14.0 | 64.4 ± 12.2 | 57.7 ± 14.1 |
| Sex (%) | |||
| Men | 78 (20.3) | 12 (12.5) | 90 (18.8) |
| Women | 306 (79.7) | 84 (87.5) | 390 (81.3) |
| Not noted | 18 | 3 | 21 |
| Condition (%) | |||
| Degenerative osteoarthritis of the hip | 300 (75.2) | 73 (74.5) | 373 (75.1) |
| Osteonecrosis of the femoral head | 61 (15.3) | 8 (8.2) | 69 (13.9) |
| No problem | 0 (0.0) | 5 (5.1) | 5 (1.0) |
| Other conditions | 38 (9.5) | 12 (12.2) | 50 (10.1) |
| Not noted | 3 | 1 | 4 |
| Total | 402 | 99 | 501 |
The values of age were mean ± standard deviation. The values of sex and condition were number and percentage. The excluded patients were those who did not completely answer the questionnaire for the survey