Table 3. Sensitivity Analysis Using TSH Levels Between 6 and 12 Weeks After Index Date Among Nonswitchers vs Switchers.

	Patients No. (%) (n = 675)		Risk or mean difference (95% CI)	P value
	Nonswitchers	Switchers
TSH level
Normal (0.3-4.4 mIU/L)	559 (82.8)	565 (83.7)	Risk difference: −0.009 (−0.049 to 0.031)	.66
Abnormal (<0.3 or >4.4 mIU/L)	116 (17.2)	110 (16.3)	Risk difference: 0.009 (−0.031 to 0.049)	.66
Markedly abnormal (<0.1 or >10 mIU/L)	28 (4.1)	22 (3.2)	Risk difference: 0.009 (−0.011 to 0.029)	.39
Mean TSH level, (SD), mIU/L	2.61 (2.73)	2.87 (4.89)	Mean difference: −0.26 (−0.68 to 0.16)	.23
Mean TSH level change from baseline, (SD), mIU/L	0.44 (2.63)	0.67 (4.85)	Mean difference: −0.23 (−0.65 to 0.18)	.27

Abbreviation: TSH, thyrotropin.