Changes in FDA enforcement activities following changes in federal administration: the case of regulatory letters released to pharmaceutical companies

Table 1 Regulatory letters released by the FDA by type of letter, 1997–2011

	Clinton 2nd administration				Bush administrations								Obama administration			All
Type of Letter	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	Total
Warning Letters	122	152	116	119	131	97	84	95	88	107	72	118	146	155	135	1,737
Notices of Violation	135	143	103	76	65	26	20	13	14	9	9	11	29	40	26	719
Not Available	1	4					1			1	2		2			11
Total	258	299	219	195	196	123	105	108	102	117	83	129	177	195	161	2,467

ISSN: 1472-6963