Table 4. Odds ratios (95% CI) of undergoing thoracic surgery for non-small cell lung cancer (n=18 324 patients) by quartiles of deprivation and travel time to (a) the closest diagnosing hospital and (b) the closest thoracic surgery unit. All values adjusted for age and sex.

Deprivation
Travel time	1 Least	2	3	4 Most	All quartiles
(a)
1. Closest	1	0.87 (0.67–1.12)	0.72* (0.56–0.93)	0.75* (0.59–0.94)	1
2.	0.99 (0.76–1.29)	0.78 (0.60–1.00)	0.85 (0.67–1.09)	0. 69** (0.54–0.88)	1.01 (0.91–1.12)
3.	0.87 (0.68–1.12)	0.84 (0.65–1.07)	0.75* (0.58–0.96)	0.86 (0.66–1.11)	1.03 (0.93–1.15)
4. Furthest	0.88 (0.70–1.11)	0.81 (0.63–1.04)	0.65** (0.49–0.85)	0.60** (0.44–0.84)	0.99 (0.89–1.10)
All quartiles	1	0.90* (0.81–1.00)	0.82** (0.74–0.91)	0.80** (0.72–0.89)
(b)
1. Closest	1	0.91 (0.69–1.19)	0.80 (0.61–1.04)	0.70** (0.55–0.89)	1
2.	0.86 (0.65–1.13)	0.81 (0.62–1.05)	0.71** (0.54–0.92)	0. 75* (0.58–0.98)	0.98 (0.88–1.09)
3.	0.79 (0.61–1.02)	0.65** (0.50–0.85)	0.64** (0.49–0.83)	0.61** (0.46–0.81)	0.86** (0.77–0.95)
4. Furthest	0.83 (0.65–1.06)	0.71* (0.54–0.92)	0.62** (0.46–0.82)	0.55** (0.39–0.76)	0.91 (0.82–1.01)
All quartiles	1	0.90* (0.81–1.00)	0.82** (0.74–0.91)	0.80** (0.72–0.89)

All values adjusted for age and sex. ^* P<0.05, ^** P<0.01.