Table 4.

Implementation rate over time (along visit): categorical and continuous model by GEE with an unstructured matrix

Model	Variable	Estimate	Robust SE	OR	95% CI	P-value
Categorical	Intercept	4.366	0.173	–	–	<0.001
	Month 12	−0.307	0.15	0.74	0.55–0.99	0.041
	Month 18	−0.091	0.175	0.91	0.65–1.29	0.602
	Month 24	−0.242	0.174	0.79	0.56–1.1	0.165
Continuous	Intercept	4.339	0.19	–	–	<0.001
	6-month change	-0.048	0.056	0.95	0.85–1.06	0.39

Notes: In the categorical model, the month-6 visit is the reference; the continuous model takes time in 6-month leaps.

Abbreviation: GEE, generalized estimation equation.