Table 4. Multivariate logistic regression model examining factors associated with 90-day test completion, clustered by patient (interrupted time-series).

Variable	Adjusted odds ratio	95% confidence interval	p -Value
Intervention group (vs. usual care)	1.22	0.91–1.64	0.183
Follow-up period (vs. baseline)	0.88	0.61–1.25	0.468
Intervention-follow-up interaction	1.04	0.71–1.52	0.842
Month	1.05	1.00–1.09	0.039
Days from order to scheduled test date	1.00	1.00–1.00	0.953
Patient age	1.01	1.01–1.02	0.001
Male gender	0.78	0.59–1.03	0.081
White race	0.93	0.77–1.14	0.497
English primary language	1.06	0.81–1.38	0.684
Medicaid or self-insured	0.90	0.71–1.15	0.414
Pulmonary clinic (vs. adult primary care)	1.80	1.19–2.73	0.005
Imaging test type (vs. mammogram)
Ultrasound	0.81	0.65–1.01	0.652
CT	0.99	0.72–1.36	0.717
Nuclear medicine	0.86	0.67–1.10	0.674
MRI	1.22	0.74–2.00	0.745
General radiology	0.56	0.28–1.11	0.284

Abbreviations: CT, computed tomography; MRI, magnetic resonance imaging.

Note: Bold values denote statistically significant results.