. 2020 Mar 20;9(10):3407–3416. doi: 10.1002/cam4.2978

TABLE 3.

Mean time‐to‐treatment initiation and time to adjuvant treatment for the patient population with Stages IA‐IIIB non‐small cell lung cancer, expressed in days

Patterns of care variable	Mean time (days)					P ^a	P for interaction (with time) ^b
Patterns of care variable	Q1	Q2	Q3	Q4	Q5	P ^a	P for interaction (with time) ^b
Stages IA‐IIIA
Lung resection surgery following diagnosis	51.5	50.1	49.5	48.2	41.2	.10	.40
Stages IA‐IIB
Lung resection surgery following diagnosis (sensitivity analysis)	49.1	48.7	46.8	45.8	46.5	.04^*	1.00
Stages IA‐IIIB
Thoracic radiation following diagnosis	74.1	72.7	74.1	72.2	70.7	.16	.98
Stages IB‐IIIA
Platinum‐based vinorelbine adjuvant chemotherapy following surgery	62.1	64.2	63.3	62.7	61.6	.41	.42

Q indicates income quintile.

^{^a}

P‐value for the multivariable regression model effect of SES and outcome, without the interaction term between socioeconomic status (SES) and time.

^{^b}

P‐value for the interaction term between income quintile and index year, in the multivariable regression model.

Denotes a statistically significant finding (P < .05) where P is the overall adjusted income quintile F value from multivariable linear regression.