Table 2 Predictors of change over follow-up in Short Form 36 Health Survey (SF-36) physical function score of controls
Characteristics at baselineSubjects, nMean change (95% CI) in SF-36 physical function score relative to reference level of risk factor*
Baseline SF-36 physical function score (change per 10 units of score at baseline)335−3.7 (−4.7 to −2.7)
Sex:
Male130Reference
Female205−7.0 (−12.7 to −1.2)
Age (years):
<70166Reference
70–7583−7.5 (−13.9 to −1.2)
>7586−14.2 (−20.5 to −7.8)
BMI (kg/m2):
<25151Reference
25 to <30148−3.7 (−9.2 to 1.8)
⩾3036−11.1 (−20.0 to −2.1)
Smoking habits:
Never smoked138Reference
Ex-smoker153−4.2 (−9.9 to 1.5)
Current smoker44−9.6 (−17.9 to −1.3)
Hypertension:
Absent245Reference
Present90−8.1 (−14.1 to −2.1)
Diabetes:
Absent311Reference
Present240.6 (−9.6 to 10.8)
Thyroid disease:
Absent310Reference
Present25−5.6 (−15.5 to 4.2)

  • *All estimates were derived from a single model and thus are mutually adjusted.

  • BMI, body mass index.