. Author manuscript; available in PMC: 2010 Jul 15.

Published in final edited form as: Arthritis Rheum. 2009 Jul 15;61(7):859–866. doi: 10.1002/art.24585

Table 4.

Prognostic factors for less severe radiographic damage (being in the lowest quartile of the distribution of BASRI-S/duration of AS), by multivariate logistic regression analysis. All variables were included in the model.

	Adjusted Odds Ratio	95% Confidence Interval	P
Age of onset, per year	0.94	0.89, 0.97	.0005
Male	0.28	0.16, 0.48	<.0001
Current smoker	0.29	0.09, 0.85	.03
White	1.63	0.71, 3.74	.25
Recreational exercise during teens/twenties, per 1 unit	1.20	0.79, 1.81	.39
DRB1*0901	3.84	0.94, 15.61	.06
DQA1*0102	0.57	0.31, 1.02	.06