TABLE 2.

Claims completeness for generic and branded warfarin for individuals in the yearly cohorts containing INR claims

Year	No. of 6-month cross sections (N = 183,308)	Percent appearing: Generic (95% CI)*	Percent appearing: Brand (95% CI)*	Percent appearing: Total (95% CI)
2003	12,472	60.6 (59.7-61.4)	37.2 (36.3-38.0)	91.6 (91.1-92.1)
2004	17,666	62.3 (61.5-63.0)	35.5 (34.8-36.2)	91.5 (91.1-91.9)
2005	23,173	68.4 (67.8-69.0)	30.2 (29.6-30.8)	91.1 (90.8-91.5)
2006	23,056	69.5 (68.9-70.1)	26.5 (25.9-27.0)	90.8 (90.5-91.2)
2007	24,552	71.3 (70.7-71.9)	22.4 (21.8-22.9)	89.5 (89.1-90.0)
2008	40,579	72.4 (71.9-72.8)	19.1 (18.7-19.5)	88.1 (87.8-88.4)
2009	41,810	74.7 (74.3-75.2)	15.1 (14.8-15.4)	87.2 (86.8-87.5)
Total	183,308	70.1 (69.9-70.4)	23.8 (23.4-24.2)	89.4 (89.2-89.5)

^*Columns may add up to more than the total

Abbreviations: INR: international normalized ratio; CI, Confidence interval