Table 1

Subject characteristics

Characteristic

Incidence cohort

Control cohort

P value


Number of subjects

92

53

Age in years, mean ± SD

50.65 ± 2.89

50.30 ± 3.03

0.49a

Body mass index in kg/m2, mean ± SD

23.78 ± 2.25

23.90 ± 2.23

0.78a

Number of females

50

36

0.10b

WOMAC pain score

0

0

Kellgren-Lawrence score

0

0


aRegression model; bPearson chi-square test. SD, standard deviation; WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index.

Joseph et al. Arthritis Research & Therapy 2011 13:R153   doi:10.1186/ar3469

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