Table 5.

 Odds ratios (95% confidence intervals) adjusted for clustering (186 741 patients in 311 providers) for emergency admission by social factors and admission period for patients with lung cancer (1 April 1999 - 31 March 2006)

Variable	Total*	No (%) with emergency admission†	Univariable model			Multivariable model‡
			Odds ratio (95% CI)	P value§		Odds ratio (95% CI)	P value§
Men	113 166	57 125 (50.5)	1	<0.001		1	<0.001
Women	73 575	39 396 (53.5)	1.14 (1.11 to 1.16)			1.12 (1.09 to 1.14)
Fifth of index of multiple deprivation:
1 (most deprived)	52 181	28 791 (55.2)	1	<0.001		1	<0.001
2	41 593	21 662 (52.1)	0.82 (0.79 to 0.84)			0.80 (0.78 to 0.82)
3	36 153	18 354 (50.8)	0.77 (0.74 to 0.79)			0.74 (0.72 to 0.76)
4	31 565	15 513 (49.1)	0.72 (0.69 to 0.74)			0.68 (0.66 to 0.71)
5 (least deprived)	25 249	12 201 (48.3)	0.68 (0.65 to 0.70)			0.64 (0.62 to 0.67)
Age group (years):
50-59	25 834	10 232 (39.6)	1	<0.001		1	<0.001
60-69	51 898	22 535 (43.4)	1.15 (1.12 to 1.19)			1.23 (1.16 to 1.30)
70-79	72 801	38 107 (52.3)	1.62 (1.57 to 1.67)			1.70 (1.61 to 1.80)
80-89	32 948	22 772 (69.1)	3.20 (3.09 to 3.32)			3.13 (2.93 to 3.34)
≥90	3260	2875 (88.2)	10.61 (9.49 to 11.88)			11.03 (8.93 to 13.62)
Admission period (reporting period 1 April to 31 March):
Per year	—	—	1.018 (1.013 to 1.024)	<0.001		1.021 (1.008 to 1.035)	0.002
Interaction between age group and admission period:
50-59×period	—	—	—	—		1	<0.001
60-69×period	—	—	—	—		0.980 (0.965 to 0.996)
70-79×period	—	—	—	—		0.987 (0.972 to 1.002)
80-89×period	—	—	—	—		1.011 (0.993 to 1.029)
≥90×period	—	—	—	—		0.993 (0.938 to 1.050)

*Figures based on first admission. Identification of lung cancer patients based on 1st to 4th diagnosis fields.

†As percentage of total admissions.

‡Intraclass correlation coefficient 0.217 (0.184 to 0.254).

§Wald tests of significance.