Table 3 Mean scores for age, BMI, IMD, the SF-12 PCS and MCS and the EQ-5D using the five categories of no joint pain to four sites of joint pain
No sites of joint pain mean (SD) | Pain in one joint site mean (SD) | Pain in two joint sites mean (SD) | Pain in three joint sites mean (SD) | Pain in four joint sites mean (SD) | Overall difference between groups | Linear trend test | |
|---|---|---|---|---|---|---|---|
Age | 62.6 (11.3) | 63.0 (11.1) | 63.8 (11.0) | 64.8 (11.2) | 66.3 (10.9) | F = 43.6a p < 0.001 | F = 171.9b p < 0.001 |
BMI | 25.6 (4.0) | 26.3 (4.1) | 27.0 (4.5) | 27.7 (5.1) | 28.4 (5.6) | F = 138.1a p < 0.001 | F = 531.8b p < 0.001 |
IMD | 20,685 (8122) | 20,985 (8070) | 20,324 (8365) | 19,657 (8368) | 18,561 (8609) | F = 33.2a P < 0.001 | F = 114.6b P < 0.001 |
SF-12 (PCS) | 51.9 (8.9) | 48.8 (10.1) | 44.9 (11.5) | 40.5 (12.3) | 35.0 (12.2) | F = 919.2a p < 0.001 | F = 3637.3b p < 0.001 |
SF-12 (MCS) | 52.5 (8.9) | 51.7 (9.2) | 50.1 (10.2) | 48.3 (10.8) | 45.5 (11.7) | F = 190.9a p < 0.001 | F = 752.6b p < 0.001 |
EQ-5D | 0.90 (0.15) | 0.82 (0.19) | 0.74 (0.22) | 0.64 (0.27) | 0.51 (0.32) | F = 1045.5a p < 0.001 | F = 4151.0b p < 0.001 |