Table 3.

Variables associated with cardiac related hospitalization at P<0.1 in each stratum

Stratum	Variables associated with cardiac related hospitalization	Hazard ratio* (95% CI)	P-value
All (n=403)	Low number of medications (<10) Medium number of medications (10-16) High number of medications (>16) Primary HF diagnosis Prescription of ACEI/ARB	0.32 (0.14 to 0.76) Reference variable 1.1 (0.66 to 1.84) 1.48 (0.93 to 2.36) 0.59 (0.37 to 0.94)	0.009 – 0.718 0.096 0.027
High illness severity (n=219)	Psychiatric co-morbidity Prescription of diuretic Diabetes co-morbidity	0.26 (0.1 to 0.82) 0.48 (0.26 to 0.89) 0.51 (0.29 to 0.89)	0.022 0.02 0.018
Low illness severity (n=184)	Prescription of ACEI/ARB Psychiatric co-morbidity	0.42 (0.15 to 1.16) 4.27 (1.36 to 13.41)	0.095 0.013
Males (n=181)	Prescription of ACEI/ARB	0.62 (0.39 to 0.98)	0.043
Females (n=222)	Low number of medications (<10) Medium number of medications (10-16) High number of medications (>16) New HF diagnosis	0.26 (0.06 to 1.12) Reference variable 1.58 (0.78 to 3.2) 2.2 (0.91 to 5.3)	0.071 – 0.209 0.08
<75 years age (n=78)	Obesity	4.29 (1.25 to 14.67)	0.02
75–84 years age (n= 110)	None	Model not significant
>84 years age (n=215)	Low number of medications (<10) Medium number of medications (10-16) High number of medications (>16) Primary HF diagnosis	0.36 (0.1 to 1.0) Reference variable 1.77 (0.85 to 3.67) 2.4 (1.12 to 4.8)	0.056 – 0.126 0.013

^*Increase in odds ratio associated with 1 unit increase in predictor