Table 2

Interrupted Time Series Analysis for Mean Hemoglobin A_1c Levels

	HbA_1c, % (95% CI)

Parameter	All Patients	White	Black	South Asian
Pre-QOF trend	−0.21 (−0.23 to −0.18)^a	−0.20 (−0.24 to −0.17)^a	−0.21 (−0.27 to −0.15)^a	−0.20 (−0.26 to −0.15)^a
Level change post-QOF	0.04 (−0.04 to 0.12)	0.07 (−0.04 to 0.18)	−0.12 (−0.29 to 0.04)	0.18 (0.02 to 0.34)^b
Post-QOF trend	0.19 (0.15 to 0.22)^a	0.21 (0.16 to 0.26)^a	0.21 (0.14 to 0.29)^a	0.11 (0.04 to 0.18)^a

HbA_1c=hemoglobin A_1c; QOF = Quality and Outcomes Framework.
↵a P <.01.
↵b P <.05.