Table 2.

Unadjusted and Adjusted Mixed Effects Logistic Regression Measuring Impact of Appointment Time on the Likelihood of a Patient Recommending Our Practice to Others (N = 3172)

	N (%)	Unadjusted Logistic regression model			Multilevel mixed effects Logistic regression model*
		OR	95% CI	p value	OR	95% CI	p value	Groups	ICC
Appointment time
8:00–8:59 AM	492 (15.0)	ref	–	–	ref	–	–	162	6.67%
9:00–9:50 AM	335 (10.3)	0.82	0.56–1.19	0.289	0.86	0.56–1.33	0.564
10:00–10:59 AM	532 (16.3)	0.88	0.63–1.24	0.464	0.81	0.54–1.19	0.292
11:00–11:59 AM	228 (7.0)	059	0.40–0.88	0.010	0.53	0.34–0.83	0.008
1:00–1:59 PM	475 (14.5)	0.94	0.66–1.33	0.719	0.82	0.55–1.22	0.373
2:00–2:59 PM	540 (16.5)	0.56	0.41–0.77	< 0.001	0.55	0.38–0.79	0.001
3:00–3:59 PM	426 (13.0)	0.53	0.38–0.74	< 0.001	0.53	0.56–0.78	0.001
4:00–4:59 PM	240 (7.4)	0.59	0.40–0.87	0.008	0.55	0.35–0.86	0.010
Sensitivity analysis
Appointment Time
8:00–8:59 AM	492 (15.0)	ref	–	–	ref	–	–	162	7.00%
9:00–9:50 AM	335 (10.3)	0.83	0.56–1.22	0.343	0.91	0.58–1.43	0.797
10:00–10:59 AM	532 (16.3)	0.94	0.66–1.35	0.749	0.90	0.60–1.34	0.675
11:00–11:59 AM	228 (7.0)	0.62	0.41–0.94	0.024	0.57	0.36–0.92	0.027
1:00–1:59 PM	475 (14.5)	1.00	0.69–1.45	0.985	0.91	0.60–1.38	0.743
2:00–2:59 PM	540 (16.5)	0.61	0.44–0.86	0.004	0.60	0.41–0.88	0.008
3:00–3:59 PM	426 (13.0)	0.57	0.40–0.81	0.035	0.58	0.39–0.87	0.008
4:00–4:59 PM	240 (7.4)	0.64	0.43–0.95	< 0.001	0.59	0.37–0.95	0.036

*Adjustment factors: patient’s age, gender, marital status, education, Charlson Comorbidity Score, provider type, random provider effect, total wait time

OR, odds ratio; 95% CI, 95% confidence interval, ICC, interclass coefficient