Lack of evidence of a beneficial effect of azathioprine in dogs treated with prednisolone for idiopathic immune-mediated hemolytic anemia: a retrospective cohort study

Table 3 Life table and estimated survival results for the AP protocol group (n = 149) and P protocol group (n = 73) at 14 days, 6 months, and 1 year after the date of diagnosis of idiopathic IMHA and at the time of the scheduled first visit (28 days) and second control visit (70 days)

Azathioprine-Prednisolone Protocol
Time (days)	# at risk^a	Cumulative # events^b	Cumulative # censored^c	Estimated survival	95% CI Interval
14	98	30	21	0.785	0.719 - 0.856
28	61	31	57	0.776	0.710 - 0.849
70	67	32	50	0.756	0.686 - 0.833
182	31	35	86	0.725	0.647 - 0.812
365	12	36	106	0.685	0.588 - 0.802
Prednisolone Protocol
14	56	17	0	0.767	0.676 - 0.870
28	53	19	1	0.738	0.644 - 0.847
70	46	21	8	0.709	0.611 - 0.822
182	42	24	11	0.661	0.559 - 0.782
365	36	26	18	0.643	0.539 - 0.767

^a Number of dogs alive.
^b Cumulative number of dogs in each protocol group that died of idiopathic IMHA.
^c Cumulative number of dogs in each protocol group that were censored.

ISSN: 1746-6148