Table 4 Odds ratio and 95% confidence intervals for the associations of trajectories ¹ of socioeconomic status ² with odds of having self-reported doctor-diagnosed arthritis ³

(n = 426)

(n = 388)

(n = 462)

1.00

1.40 (0.83, 2.36)

1.93 (0.85, 4.38)

n = 162

n = 73

n = 33

1.09 (0.72, 1.63)

1.15 (0.82, 1.60)

2.20 (1.29, 3.75)

n = 154

n = 139

n = 102

1.26 (0.83, 1.93)

1.76 (1.15, 2.70)

2.05 (1.35, 3.12)

n = 110

n = 176

n = 327