Table 3.

Relation of step length quintiles to worsening of cartilage damage and any BMLs from 60 to 84 months in subregions of the PFJ among females

	Worsening Cartilage Damage (n= 1662 subregions)			Worsening BMLs (n=2582 subregions)
Step Length	Prevalence	Crude OR	Adjusted OR*	Prevalence	Crude OR	Adjusted OR*
Quintile 5	25/332	1.0	0.85	62/511	1.2	1.2
(69.30-83.29)	(7.5%)	(0.55, 2.0)	(0.41, 1.7)	(12.1%)	(0.78, 1.8)	(0.74, 1.8)
Quintile 4	10/330	0.40	0.36	44/518	0.80	0.76
(65.16-69.29)	(3.0%)	(0.17, 0.95)	(0.15, 0.87)	(8.5%)	(0.51, 1.2)	(0.49, 1.2)
Quintile 3	26/333	1.1	1.0	58/520	1.1	1.1
(61.87-65.15)	(7.8%)	(0.57, 2.1)	(0.52, 2.0)	(11.2%)	(0.70, 1.6)	(0.70, 1.7)
Quintile 2	33/337	1.4	1.2	59/517	1.1	1.1
(58.03-61.86)	(9.8%)	(0.75, 2.6)	(0.67, 2.3)	(11.4%)	(0.71, 1.7)	(0.70, 1.7)
Quintile 1	24/330	1.0	1.0	54/516	1.0	1.0
(41.51-58.02)	(7.3%)	(Reference)	(Reference)	(10.5%)	(Reference)	(Reference)
		p trend=0.3	p trend=0.1		p trend=0.9	p trend= 0.7

^*Adjusted for age, BMI, leg length and tibiofemoral joint structural damage