. Author manuscript; available in PMC: 2009 Aug 3.

Published in final edited form as: Int J Biostat. 2007;3(1):14. doi: 10.2202/1557-4679.1072

Table 1.

Distribution of GI risk factors and recent/concomitant therapies across levels of the exposure.

Variable	Coxib Users	NSAID Users	Prevalence Difference and 95% CI
U*	E[U*\|X = 1]	E[U*\|X = 0]	E[U\|X = 1] – E[U\|X = 0]
Patient Characteristics
Female Gender	85.89%	81.11%	4.79% (4.09% – 5.48%)
Age ≥ 75	75.08%	65.28%	9.80% (8.95% – 10.64%)
History of GI Bleed	1.71%	1.11%	0.60% (0.39% – 0.81%)
History of Peptic Ulcer Disease	3.71%	2.41%	1.29% (0.99% – 1.60%)
History of Coronary Hospitalization or Procedure	16.42	14.76	1.67% (1.00% – 2.33%)
Recent/Concomitant Rxs
Concomitant Use of GI-protective Drugs	5.08%	4.00%	1.08% (0.71% – 1.46%)
Recent Use of GI-protective Drugs	27.34%	20.41%	6.93% (6.16% – 7.70%)
Recent Use of Glucocorticoids	8.73%	7.80%	0.94% (0.44% – 1.44%)
Recent Use of Warfarin	13.25%	6.53%	6.71% (6.19% – 7.23%)