Table 3.
Association between selected characteristics and functional limitation of newly diagnosed female hip osteoarthritis (OA) patients: stair‐climbing
| Stair‐climbing n (%) | Crude OR (95% CI) | Age and OA stage‐adjusted OR (95% CI) | Final model† (95% CI) | |||
|---|---|---|---|---|---|---|
| Cannot (N = 15) | Can with support or assistance (N = 232) | Can (N = 106) | ||||
| Age (years) | ||||||
| < 54 | 1 (1) | 60 (50) | 59 (49) | 1 | 1 | |
| 54–66 | 1 (1) | 78 (68) | 36 (31) | 2.05 (1.22–3.47) | 1.04 (0.55–1.96) | |
| ≥ 67 | 13 (11) | 94 (80) | 11 (9) | 11.0 (5.52–21.7) | 4.81 (2.17–10.7) | |
| P for trend | < 0.0001 | 0.0001 | ||||
| Height at diagnosis (cm) | ||||||
| < 151.0 | 6 (5) | 89 (78) | 19 (17) | 3.56 (2.02–6.27) | 1.93 (1.03–3.62) | 2.05 (1.02–4.12) |
| 151.0–155.9 | 6 (5) | 79 (66) | 34 (29) | 2.03 (1.20–3.44) | 1.80 (1.00–3.22) | 2.00 (1.08–3.68) |
| ≥ 156.0 | 3 (3) | 64 (53) | 53 (44) | 1 | 1 | 1 |
| P for trend | < 0.0001 | 0.036 | 0.037 | |||
| Weight at diagnosis (kg) | ||||||
| < 50.5 | 7 (6) | 73 (61) | 40 (33) | 1 | 1 | 1 |
| 50.5–57.9 | 5 (5) | 77 (70) | 28 (25) | 1.34 (0.78–2.32) | 1.27 (0.69–2.32) | 1.55 (0.82–2.90) |
| ≥ 58.0 | 3 (2) | 82 (67) | 38 (31) | 1.00 (0.60–1.68) | 1.25 (0.70–2.22) | 1.72 (0.91–3.26) |
| P for trend | 0.988 | 0.453 | 0.093 | |||
| Body mass index at diagnosis (kg/m2) | ||||||
| < 21.46 | 5 (4) | 67 (57) | 45 (39) | 1 | 1 | |
| 21.46–24.38 | 7 (6) | 78 (66) | 33 (28) | 1.63 (0.96–2.77) | 1.32 (0.73–2.39) | |
| ≥ 24.39 | 3 (3) | 87 (74) | 28 (24) | 1.75 (1.02–2.98) | 1.44 (0.79–2.60) | |
| P for trend | 0.041 | 0.232 | ||||
| History of treatment for hip injury (≥ 2 weeks) | ||||||
| No | 14 (4) | 223 (65) | 105 (31) | 1 | 1 | |
| Yes | 1 (9) | 9 (82) | 1 (9) | 3.26 (0.80–13.3) | 2.00 (0.48–8.25) | |
| Education (years) | ||||||
| ≤ 9 | 7 (11) | 50 (79) | 6 (10) | 1 | 1 | 1 |
| 10–12 | 6 (3) | 126 (67) | 57 (30) | 0.25 (0.12–0.52) | 0.55 (0.26–1.18) | 0.64 (0.29–1.40) |
| ≥ 13 | 2 (2) | 56 (55) | 43 (43) | 0.15 (0.07–0.32) | 0.38 (0.17–0.89) | 0.42 (0.18–1.00) |
| P for trend | < 0.0001 | 0.026 | 0.041 | |||
| Sports participation such as club activities in school | ||||||
| No | 11 (6) | 135 (70) | 46 (24) | 1 | 1 | 1 |
| Yes | 4 (3) | 97 (60) | 60 (37) | 0.52 (0.33–0.81) | 0.83 (0.50–1.38) | 0.92 (0.54–1.57) |
| Occupation (N = 348) | ||||||
| Non‐physical workers | 12 (4) | 205 (66) | 93 (30) | 1 | 1 | |
| Physical workers | 3 (8) | 26 (68) | 9 (24) | 1.52 (0.72–3.17) | 0.87 (0.39–1.96) | |
| Parity | ||||||
| Nulliparous | 0 (0) | 32 (55) | 26 (45) | 1 | 1 | 1 |
| Parous | 15 (5) | 200 (68) | 80 (27) | 2.32 (1.32–4.10) | 1.44 (0.75–2.78) | 1.41 (0.71–2.80) |
| Smoking (N = 352) | ||||||
| Never | 12 (4) | 192 (67) | 84 (29) | 1 | 1 | |
| Past | 2 (6) | 17 (55) | 12 (39) | 0.72 (0.34–1.53) | 1.44 (0.62–3.33) | |
| Current | 1 (3) | 22 (67) | 10 (30) | 0.92 (0.44–1.95) | 1.10 (0.47–2.55) | |
| Consumption of alcohol (N = 351) | ||||||
| Never | 12 (5) | 163 (69) | 61 (26) | 1 | 1 | |
| Past | 1 (8) | 7 (58) | 4 (33) | 0.80 (0.24–2.70) | 1.76 (0.47–6.58) | |
| Current | 2 (2) | 60 (58) | 41 (40) | 0.52 (0.32–0.83) | 1.01 (0.58–1.75) | |
| Site of hip OA | ||||||
| Unilateral | 8 (4) | 126 (66) | 58 (30) | 1 | 1 | 1 |
| Bilateral | 7 (4) | 106 (66) | 48 (30) | 1.02 (0.66–1.58) | 1.42 (0.86–2.34) | 1.71 (1.01–2.88) |
| OA stage | ||||||
| Pre‐OA stage or the initial stage | 1 (1) | 34 (38) | 55 (61) | 1 | 1 | |
| Advanced stage | 2 (2) | 67 (68) | 29 (30) | 3.64 (2.00–6.61) | 2.90 (1.48–5.66) | |
| Terminal stage | 12 (7) | 131 (79) | 22 (13) | 10.3 (5.63–18.8) | 6.28 (3.19–12.4) | |
| P for trend | < 0.0001 | < 0.0001 | ||||
†Model included age, height and weight at diagnosis, education, sports participation in school, parity, site of hip OA, and OA stage as explanatory variables. Analysis based on sample of 353.