Table 3
Frequency table for arthritis development in subgroups of smoking and body mass index (BMI)
Never smoker
Ever smoker
BMI<25 kg/m
2
(N=10)
BMI≥25 kg/m
2
(N=10)
BMI<25 kg/m
2
(N=14)
BMI≥25 kg/m
2
(N=21)
Follow-up time, months, median (IQR)
40 (24–71)
28 (17–51)
23 (17–41)
26 (9–42)
Arthritis developed, n (%)
0 (0)
1 (10)
2 (14)
12 (57)