Table 1

Patient characteristics and associations between patient and tumour characteristics and surgery use in patients with non-small cell lung cancer, 1995–2006

	All patients	Patients treated by surgery	% treated with surgery	Unadjusted OR	Lower 95% CI	Upper 95% CI	p Value	Adjusted OR	Lower 95% CI	Upper 95% CI	p Value
All patients	18 813	2374	12.6%	–	–	–	–	–	–	–	–
Men	12 308	1567	12.7%	–	–	–	–	–	–	–	–
Women	6505	807	12.4%	0.97	0.89	1.06	0.522	0.95	0.86	1.04	0.249
Age group linear trend^*	–	–	–	0.66	0.63	0.69	<0.001	0.66	0.63	0.69	<0.001
<60	3165	530	16.8%	–	–	–	–	–	–	–	–
60–69	5215	875	16.8%	1.00	0.89	1.13		1.00	0.89	1.13
70–79	7486	882	11.8%	0.66	0.59	0.75		0.66	0.59	0.75
≥80	2947	87	3.0%	0.15	0.12	0.19		0.15	0.12	0.19
Diagnosis period linear trend^*	–	–	–	0.91	0.88	0.95	<0.001	0.95	0.92	0.99	0.022
1995–1997	4461	647	14.5%	–	–	–	–	–	–	–	–
1998–2000	4629	574	12.4%	0.83	0.74	0.94		0.87	0.77	0.98
2001–2003	4847	617	12.7%	0.86	0.76	0.97		0.95	0.85	1.08
2004–2006	4876	536	11.0%	0.73	0.64	0.82		0.85	0.75	0.97
Other non-small cell	3698	252	6.8%	–	–	–	–	–	–	–	–
Adenocarcinoma	5490	896	16.3%	2.67	2.30	3.09	<0.001	2.58	2.23	3.00	<0.001
Squamous cell	9625	1226	12.7%	2.00	1.73	2.30	<0.001	2.08	1.80	2.41	<0.001
Deprivation linear trend^*	–	–	–	0.95	0.92	0.99	0.009	0.96	0.93	0.99	0.018
Most affluent	3531	480	13.6%	–	–	–		–	–	–
2	4256	540	12.7%	0.92	0.81	1.05		0.95	0.83	1.09
3	4829	619	12.8%	0.93	0.82	1.06		0.95	0.83	1.08
4	4384	537	12.3%	0.89	0.78	1.01		0.90	0.79	1.03
Most deprived	1813	198	10.9%	0.78	0.65	0.93		0.78	0.65	0.94

↵* Entered as a continuous variable.
OR: Odds Ratio CI: Confidence Interval
Italics denote such ‘test for linear trend’ variables.