Table 4 Mean (standard deviation) KQoL-26 scoresa by responses to knee-related questions
Variable | Physical functioning | Activity limitations | Emotional functioning | |||
|---|---|---|---|---|---|---|
n | mean (sd) | n | mean (sd) | n | mean (sd) | |
Knee pain present during day: | ||||||
None of the time | 7 | 71.52 (19.44) | 7 | 80.00 (23.98) | 7 | 73.71 (21.27) |
Some of the time | 305 | 65.91 (16.93) | 306 | 60.74 (21.97) | 306 | 47.55 (19.78) |
All of the time | 237 | 49.93 (17.50) | 235 | 37.43 (22.69) | 237 | 30.08 (18.65) |
Knee pain present at night: | ||||||
None of the time | 64 | 74.51 (14.47) | 64 | 73.75 (18.90) | 64 | 54.16 (22.13) |
Some of the time | 345 | 60.47 (17.54) | 344 | 53.09 (23.31) | 346 | 42.62 (20.03) |
All of the time | 144 | 48.92 (18.52) | 141 | 35.57 (22.75) | 141 | 28.55 (18.87) |
Knee pain worse on movement: | ||||||
None of the time | 12 | 72.15 (18.63) | 12 | 69.72 (25.27) | 12 | 65.67 (23.85) |
Some of the time | 264 | 65.62 (17.97) | 263 | 59.84 (22.56) | 265 | 46.02 (20.89) |
All of the time | 273 | 52.25 (17.32) | 273 | 41.65 (24.30) | 273 | 33.70 (19.48) |
Knee stiff in morning: | ||||||
None of the time | 110 | 69.18 (17.32) | 110 | 64.92 (23.01) | 110 | 49.08 (21.64) |
Some of the time | 237 | 60.45 (18.07) | 237 | 52.63 (23.84) | 237 | 41.59 (21.03) |
All of the time | 201 | 52.21 (18.15) | 201 | 41.62 (24.22) | 201 | 33.79 (19.81) |
Duration of morning stiffness: | ||||||
Less than 1 hour | 63 | 61.23 (18.20) | 63 | 53.40 (23.55) | 63 | 42.31 (20.46) |
1 to 2 hours | 112 | 50.52 (17.55) | 112 | 39.65 (23.85) | 112 | 32.84 (19.09) |
Over 2 hours | 268 | 49.85 (18.11) | 268 | 38.49 (25.07) | 268 | 30.43 (21.06) |
Knee given way when walking: | ||||||
Never | 166 | 65.36 (18.76) | 166 | 59.80 (24.13) | 166 | 47.27 (20.83) |
Over three months ago | 42 | 67.74 (18.77) | 42 | 57.86 (25.47) | 42 | 45.43 (22.40) |
One to three months ago | 48 | 61.97 (18.41) | 48 | 54.90 (24.70) | 48 | 39.58 (21.38) |
In the last month | 293 | 53.80 (17.57) | 293 | 44.27 (24.09) | 293 | 35.77 (20.61) |
Painful inability to straighten knee: | ||||||
Never | 135 | 66.61 (16.75) | 135 | 59.01 (24.71) | 135 | 47.68 (22.24) |
Over three months ago | 39 | 66.54 (17.39) | 39 | 59.49 (24.70) | 39 | 45.95 (21.22) |
One to three months ago | 48 | 64.55 (17.98) | 48 | 46.38 (23.60) | 48 | 41.46 (22.32) |
In the last month | 324 | 54.33 (18.64) | 324 | 45.90 (24.52) | 324 | 36.59 (20.09) |
Presence of knee swelling: | ||||||
Never | 118 | 66.41 (17.83) | 117 | 61.85 (24.14) | 118 | 47.97 (21.70) |
Over three months ago | 35 | 72.95 (15.87) | 35 | 68.71 (20.52) | 35 | 54.51 (21.17) |
One to three months ago | 58 | 60.83 (17.61) | 58 | 51.90 (26.40) | 58 | 38.79 (20.79) |
In the last month | 333 | 55.06 (18.09) | 333 | 45.32 (23.64) | 334 | 36.55 (20.08) |
Changed job due to knee: | ||||||
No | 506 | 58.79 (16.17)NS | 505 | 51.02 (24.93)NS | 507 | 40.47 (21.28)NS |
Yes | 18 | 57.13 (18.68) | 18 | 41.67 (25.14) | 18 | 36.67 (20.04) |
Considering job change due to knee: | ||||||
No | 486 | 59.54 (18.92)NS | 485 | 51.91 (24.85) | 487 | 41.41 (20.93) |
Yes | 27 | 53.55 (18.41) | 27 | 36.11 (20.95) | 27 | 28.15 (19.80) |