Table 2.

Intervention effect estimates from motivating example with different analysis models.

Model	Odds ratio (95% CI)	Standard error	P‐value	P‐value of random period or intervention effect
Separate year analysis (vertical comparisons)
Year 1	1.67 (0.90,3.10)	0.32	0.11
Year 2	1.19 (0.95, 1.50)	0.12	0.13
Combined analysis
Standard model	1.74 (1.67, 1.81)	0.02	<0.001
Random period model	1.26 (1.02, 1.57)	0.11	0.03	<0.001
Random intervention model	1.25 (0.96, 1.62)	0.13	0.09	<0.001