. Author manuscript; available in PMC: 2011 Apr 1.

Published in final edited form as: Int J Cardiol. 2008 Dec 11;140(1):55–59. doi: 10.1016/j.ijcard.2008.10.049

Table 2.

Mortality in chronic heart failure patients, before and after matching by propensity scores for coronary revascularization

	Rate, per 10,000 person-years (Events/total follow up years)		Absolute rate difference^* (per 10,000 person-years)	Hazard ratio (95% confidence interval)	P value
	No coronary revascularization	Coronary revascularization	Absolute rate difference^* (per 10,000 person-years)	Hazard ratio (95% confidence interval)	P value
Pre-match	N=2853	N=120
All-cause	250 (273/10931)	153 (7/457)	−97	0.63 (0.30–1.33)	0.226
Cardiovascular	188 (206/10931)	131 (6/457)	−57	0.72 (0.32–1.62)	0.422
Worsening heart failure	95 (104/10931)	67 (3/457)	−28	0.71 (0.23–2.24)	0.557
Post-match	N=357	N=119
All-cause	161 (22/1367)	154 (7/454)	−7	0.95 (0.39–2.32)	0.910
Cardiovascular	132 (18/1367)	132 (6/454)	0	1.00 (0.38–2.64)	1.000
Worsening heart failure	73 (10/1367)	66 (3/454)	−7	0.80 (0.21–3.06)	0.744

Absolute differences in rates of events per 10,000 person-year of follow up were calculated by subtracting the event rates in the no coronary revascularization group from the event rates in the coronary revascularization group (before values were rounded)