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Published online 2013 Mar 28. doi: 10.1093/qjmed/hct061

Table 4

Associations of baseline characteristics with physical function (SF-36 physical function subscale) at follow-up (N = 834)a

CharacteristicsMean change in physical function (95% CI) adjusted for yearP-valueMean change in physical function (95% CI) adjusted for year and baseline physical functionP-valueMean change in physical function (95% CI) adjusted for year and all variables in tableP-value
10-year age group−0.40 (−0.55 to −0.25)<0.001−0.16 (−0.27 to −0.05)0.005−0.17 (−0.29 to −0.06)0.003
Sex (female vs. male)−0.67 (−1.12 to −0.23)0.0030.002 (−0.34 to 0.33)0.99−0.10 (−0.43 to 0.24)0.57
Chalder Fatigueb−0.47 (−0.58 to −0.36)<0.001−0.02 (−0.11 to 0.08)0.690.01 (−0.09 to 0.11)0.82
SF-36 (physical function)b0.81 (0.75 to 0.87)<0.0010.81 (0.75 to 0.87)<0.0010.71 (0.64 to 0.79)<0.001
HADS anxietyb−0.17 (−0.25 to −0.09)<0.001−0.05 (−0.11 to 0.01)0.140.001 (−0.07 to 0.07)0.97
HADS depressionb−0.38 (−0.47 to −0.30)<0.001−0.07 (−0.14 to 0.00)0.05−0.05 (−0.13 to 0.04)0.28
Visual Analogue Painb−0.41 (−0.47 to −0.34)<0.001−0.11 (−0.17 to −0.05)<0.001−0.11 (−0.17 to −0.05)<0.001
CBT/GET vs. Activity0.50 (0.13 to 0.88)0.0080.15 (−0.13 to 0.43)0.280.15 (−0.13 to 0.42)0.30

aRandom-effects regression model with centre as unit of effect. bThe measures were re-scaled to range from 0 to 10, hence, a regression coefficient of 1 represents a 10% change in the score.