Interval Between Hospitalizations for Heart Failure^a		n	Rehospitalization	Number of People per Year	Incidence of Rehospitalization (/1000 People/Yr)				P Value
Interval Between Hospitalizations for Heart Failure^a		n	Rehospitalization	Number of People per Year	Incidence	95% Confidence Interval^b			(Chi-Square Test)
Shorter than 24 months	Pimobendan prescription group	258	135	359.97	375.03	337.08	-	412.99	0.215
Shorter than 24 months	Non-prescription group	258	149	302.15	493.14	449.62	-	536.67
Shorter than 12 months	Pimobendan prescription group	221	118	314.21	375.54	337.56	-	413.53	0.292
Shorter than 12 months	Non-prescription group	221	129	274.28	470.32	427.81	-	512.82
Shorter than 6 months	Pimobendan prescription group	168	84	234.68	357.94	320.86	-	395.02	0.189
Shorter than 6 months	Non-prescription group	168	96	199.56	481.05	438.06	-	524.04
Shorter than 3 months	Pimobendan prescription group	119	53	168.41	314.71	279.94	-	349.48	0.154
Shorter than 3 months	Non-prescription group	119	64	108.7	588.75	541.2	-	636.31