Table 4.
OR ratio and 95% confidence interval for objective sleep measures with WOMAC hip pain
| Current Type of Pain | † N | Base Model | Base model +health + depression+ fatigue | MV model |
|---|---|---|---|---|
| OR (95% Confidence Interval) | OR (95% Confidence Interval) | OR (95% Confidence Interval) | ||
| Wake after sleep onset ≥ 90 minutes compared to <90 minutes | ||||
| WOMAC pain subscale (0–20) per 5 points change | 1.39 (1.19, 1.60) | 1.29 (1.1, 1.50) | 1.28 (1.11, 1.50) | |
| Moderate to extreme pain in 1 or more activity | 517 | 1.44 (1.15–1.81) | 1.33 (1.05–1.68) | 1.33 (1.05–1.68) |
| Moderate to extreme while … | ||||
| walking on a flat surface | 279 | 1.76 (1.32, 2.33) | 1.54 (1.16, 2.06) | 1.52 (1.13, 2.03) |
| standing upright | 282 | 1.85 (1.42, 2.46) | 1.63 (1.22, 2.17) | 1.62 (1.21, 2.17) |
| going up or down stairs | 309 | 1.50 (1.14, 2.00) | 1.38 (1.04, 1.82) | 1.36 (1.02, 1.80) |
| in bed at night or | 257 | 1.88 (1.41, 2.52) | 1.69 (1.26, 2.28) | 1.68 (1.22, 2.24) |
| when sitting or lying | 216 | 2.00 (1.47, 2.73) | 1.79 (1.31, 2.46) | 1.78 (1.29, 2.45) |
| * Referent :No or mild hip pain | 1708 | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| 8 or more wake episodes greater than 5 minutes vs. < 8 | ||||
| WOMAC pain subscale (0–20) per 5 points change | 1.25 (1.11, 1.45) | 1.24 (1.07, 1.45) | 1.24 (1.06, 1.44) | |
| Moderate to extreme pain in 1 or more activity | 517 | 1.34 (1.06–1.68) | 1.28 (1.01–1.62) | 1.28 (1.01–1.61) |
| Moderate to extreme hip pain while | ||||
| walking on a flat surface | 279 | 1.58 (1.19, 2.10) | 1.45 (1.08, 1.94) | 1.43 (1.06, 1.92) |
| standing upright | 282 | 1.66 (1.25, 2.19) | 1.52 (1.13, 2.03) | 1.51 (1.13, 2.03) |
| going up or down stairs | 309 | 1.39 (1.05, 1.83) | 1.31 (0.99, 1.74) | 1.28 (0.96, 1.70) |
| in bed at night | 257 | 1.85 (1.39, 2.48) | 1.73 (1.28, 2.32) | 1.69 (1.25, 2.28) |
| when sitting or lying | 216 | 1.99 (1.46, 2.71) | 1.86 (1.36, 2.55) | 1.85 (1.34, 2.55) |
| * Referent :No or mild hip pain | 1708 | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| Poor sleep based on PSQI >5 | ||||
| WOMAC pain subscale (0–20) per 5 points change | 1.41 (1.22–1.63) | 1.21 (1.04–1.41) | 1.2 (1.03–1.41) | |
| Moderate to extreme pain in 1 or more activity | 517 | 1.52 (1.23–1.88) | 1.24 (0.99–1.55) | 1.22 (0.97–1.54) |
| Moderate to extreme hip pain while | ||||
| walking on a flat surface | 279 | 1.51 (1.15–1.98) | 1.15 (0.86–1.54) | 1.11 (0.83–1.5) |
| standing upright | 282 | 1.49 (1.13–1.96) | 1.2 (0.89–1.6) | 1.17 (0.87–1.57) |
| going up or down stairs | 309 | 1.5 (1.15–1.95) | 1.17 (0.89–1.55) | 1.18 (0.89–1.56) |
| in bed at night | 257 | 1.95 (1.42–2.67) | 1.51 (1.08–2.11) | 1.49 (1.06–2.09) |
| when sitting or lying | 216 | 1.86 (1.39–2.48) | 1.47 (1.08–2) | 1.46 (1.07–2) |
| * Referent :No or mild hip pain | 1708 | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| Trouble sleeping due to pain 3 or more times a week | ||||
| WOMAC pain subscale (0–20) per 5 points change | 1.64 (1.35–2) | 1.57 (1.29–1.93) | 1.57 (1.28–1.93) | |
| Moderate to extreme pain in 1 or more activity | 318 | 1.95 (1.41–2.69) | 1.87 (1.35–2.6) | 1.9 (1.36–2.65) |
| Moderate to extreme hip pain while | ||||
| walking on a flat surface | 175 | 2.24 (1.52–3.3) | 2.01 (1.35–2.99) | 2.02 (1.35–3.03) |
| standing upright | 182 | 2.43 (1.65–3.56) | 2.21 (1.49–3.26) | 2.22 (1.49–3.31) |
| going up or down stairs | 201 | 2.25 (1.56–3.26) | 2.1 (1.44–3.07) | 2.07 (1.41–3.04) |
| in bed at night | 155 | 3.04 (2.03–4.55) | 2.87 (1.9–4.32) | 2.81 (1.86–4.25) |
| when sitting or lying | 194 | 2.25 (1.55–3.27) | 2.13 (1.45–3.11) | 2.14 (1.46–3.14) |
| * Referent :No or mild hip pain | 1708 | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
Base model adjusted for: age, education years, BMI, back pain and recent worsening of arthritis.
MV models adjusted for age, education years, BMI, back pain and recent worsening of arthritis, depression, fatigue, health status, anxiety, number of blocks walked for exercise and current use of benzodiazepines, opioids, or NSAIDs medications
†
Number of women with hip pain and sleep disturbance
*
referent group with no hip pain for all activities in the WOMAC scale