Table 2.

Prevalence of baseline and follow-up serum creatinine monitoring among patients initiating ACE inhibitors or angiotensin receptor blockers, 2004–2014

	Serum creatinine, ≥1 test
Total number	n=223 814 (100%)
Baseline testing
≤12 months before	169 218 (76%)
≤3 months before	115 348 (52%)
≤1 month before	75 476 (34%)
Follow-up testing
≤2 weeks after	65 090 (29%)
≤1 month after	114 244 (51%)
≤2 months after	139 044 (62%)