. Author manuscript; available in PMC: 2018 Apr 1.

Published in final edited form as: J Rheumatol. 2017 Feb 15;44(4):499–504. doi: 10.3899/jrheum.161076

Table 3.

Adjusted Odds Ratios and 95% Confidence Intervals (n=1702 ankles^*) for associations between covariates and radiographic ankle OA (KLG 2 or more)

Characteristic	Odds Ratio¹ (95% Confidence Interval)	Adjusted Odds Ratio² (95% Confidence Interval)
Age ≥ 70 years	1.74 (0.98, 3.08)	2.01 (1.11, 3.48)^†
Age < 70 years	referent	referent
BMI ≥ 30 kg/m²	1.96 (1.10, 3.49)^†	1.97 (1.12, 3.48)^†
BMI < 30 kg/m²	referent	referent
Women	1.06 (0.59, 1.88)	0.99 (0.55, 1.79)
Men	referent	referent
African-American	0.88 (0.48, 1.59)	0.89 (0.48, 1.65)
Caucasian	referent	referent
Ankle injury	2.54 (1.24, 5.22)^†	2.33 (1.11, 4.92)^†
No injury	referent	referent
Ankle symptoms	3.30 (1.84, 5.92)^†	2.99 (1.65, 5.42)^†
No ankle symptoms	referent	referent

n=864 individuals/1728 ankles; missing data on injury (10 individuals/20 ankles), symptoms (1 individual/2 ankles), or KLG (4 ankles) results in 1702 ankles available for complete case analysis.

^†

statistically significant

Odds Ratio¹: adjusted only for intra-person correlation using generalized estimating equations

Odds Ratio²: adjusted for intra-person correlation and all other listed covariates