Table 4.

Odds ratios for presenting with higher stage lung cancer by socioeconomic status in multinomial logit models, 2005–2014, n = 7013

		Model 1a						Model 2b
		Stage IV		Stage III		Stage II		Stage IV		Stage III		Stage II
Socioeconomic	status	OR (95% CI)	P	OR (95% CI)	P	OR (95% CI)	P	OR (95% CI)	P	OR (95% CI)	P	OR (95% CI)	P
Educational level	Illiterate	1.00		1.00		1.00		1.00		1.00		1.00
	Primary school	0.61 (0.46–0.81)	<0.001	0.89 (0.68–1.16)	0.381	1.32 (0.95–1.84)	0.102	0.64 (0.48–0.85)	0.002	0.86 (0.66–1.13)	0.287	1.27 (0.91–1.78)	0.154
	Middle school	0.69 (0.52–0.91)	0.009	0.94 (0.71–1.23)	0.625	1.45 (1.04–2.01)	0.030	0.71 (0.53–0.94)	0.016	0.89 (0.68–1.17)	0.403	1.38 (0.99–1.93)	0.059
	High school	0.58 (0.42–0.80)	0.001	0.87 (0.64–1.18)	0.364	1.61 (1.12–2.33)	0.011	0.63 (0.46–0.88)	0.006	0.84 (0.61–1.15)	0.265	1.56 (1.07–2.26)	0.020
	College degree or above	0.55 (0.38–0.79)	0.001	0.67 (0.47–0.96)	0.029	1.02 (0.65–1.58)	0.942	0.52 (0.36–0.76)	<0.001	0.65 (0.45–0.93)	0.019	1.02 (0.65–1.60)	0.943
Occupational level	Farmer	1.00		1.00		1.00		1.00		1.00		1.00
	Nonfarmer	0.75 (0.63–0.88)	<0.001	0.71 (0.60–0.83)	<0.001	0.77 (0.64–0.93)	0.006	0.88 (0.72–1.06)	0.180	0.76 (0.63–0.91)	0.003	0.85 (0.69–1.06)	0.144
Area SES tertile	1 (lowest)	1.00		1.00		1.00		1.00		1.00		1.00
	2	1.22 (1.01–1.47)	0.042	1.32 (1.09–1.59)	0.004	0.80 (0.64–1.01)	0.060	1.41 (1.16–1.72)	<0.001	1.39 (1.14–1.69)	0.001	0.80 (0.63–1.01)	0.062
	3 (highest)	0.23 (0.20–0.28)	<0.001	0.60 (0.51–0.70)	<0.001	0.75 (0.62–0.90)	0.002	0.29 (0.24–0.35)	<0.001	0.67 (0.56–0.79)	<0.001	0.77 (0.63–0.94)	0.012

^aModel 1: multivariate analysis: education/occupation/area‐level SES. Stage I is the reference group.

^bModel 2: multivariate analysis: education/occupation/area‐level SES+all demographics index after a stepwise selection. Stage + is the reference group.