Table 2

Characteristics of the study population

Characteristic		New South Wales		Victoria		Alberta		Ontario		Norway		England		Northern Ireland		Scotland		Wales		Total
Characteristic		n	%	n	%	n	%	n	%	n	%	n	%	n	%	n	%	n	%	Total
Total		10 098	100.0	9139	100.0	7204	100.0	30 203	100.0	10 411	100.0	1 34 417	100.0	4292	100.0	19 628	100.0	8589	100.0	2 33 981
Sex	Male	6005	59.5	5414	59.2	3689	51.2	15 851	52.5	5830	56.0	74 247	55.2	2490	58.0	10 109	51.5	4759	55.4	1 28 394
Sex	Female	4093	40.5	3725	40.8	3515	48.8	14 352	47.5	4581	44.0	60 170	44.8	1802	42.0	9519	48.5	3830	44.6	1 05 587
Age at diagnosis, years	<51	529	5.2	455	5.0	333	4.6	1437	4.8	414	4.0	4538	3.4	167	3.9	579	2.9	244	2.8	8696
	51 to 60	1383	13.7	1237	13.5	1104	15.3	4909	16.3	1498	14.4	15 209	11.3	580	13.5	2254	11.5	958	11.2	29 132
	61 to 70	2989	29.6	2586	28.3	2125	29.5	9505	31.5	3486	33.5	38 020	28.3	1325	30.9	5633	28.7	2542	29.6	68 211
	71 to 80	3213	31.8	2990	32.7	2401	33.3	9884	32.7	3295	31.6	45 446	33.8	1469	34.2	7067	36.0	2959	34.5	78 724
	>80	1984	19.6	1871	20.5	1241	17.2	4468	14.8	1718	16.5	31 204	23.2	751	17.5	4095	20.9	1886	22.0	49 218
Tumour site	Main bronchus	861	8.5	630	6.9	367	5.1	1858	6.2	448	4.3	7708	5.7	127	3.0	1414	7.2	611	7.1	13 163
	Upper lobe	4312	42.7	3747	41.0	3777	52.4	15 438	51.1	4069	39.1	55 183	41.1	958	22.3	8626	43.9	3249	37.8	95 047
	Middle lobe	426	4.2	357	3.9	354	4.9	1375	4.6	363	3.5	4595	3.4	56	1.3	515	2.6	302	3.5	7917
	Lower lobe	2433	24.1	2059	22.5	1943	27.0	7625	25.2	2341	22.5	28 856	21.5	424	9.9	4383	22.3	1761	20.5	49 392
	Overlapping lesion	133	1.3	94	1.0	43	0.6	159	0.5	92	0.9	560	0.4	8	0.2	125	0.6	21	0.2	1102
	Unspecified	1933	19.1	2252	24.6	720	10.0	3748	12.4	3098	29.8	37 515	27.9	2719	63.4	4565	23.3	2645	30.8	57 262
Charlson	0	7818	77.4	7203	78.8	5817	80.7	25 757	85.3	8205	78.8	96 860	72.1	3174	74.0	15 294	77.9	6200	72.2	1 76 328
	1	1030	10.2	891	9.7	662	9.2	2228	7.4	1254	12.0	21 656	16.1	607	14.1	2311	11.8	1424	16.6	32 063
	2	563	5.6	469	5.1	332	4.6	1058	3.5	577	5.5	8912	6.6	301	7.0	978	5.0	577	6.7	13 767
	≥3	687	6.8	576	6.3	393	5.5	1160	3.8	375	3.6	6989	5.2	210	4.9	1045	5.3	388	4.5	11 823
Elixhauser	0	7084	70.2	6575	71.9	5508	76.5	24 901	82.4	7882	75.7	84 335	62.7	2904	67.7	14 245	72.6	5485	63.9	1 58 919
	1	1192	11.8	1035	11.3	551	7.6	2126	7.0	1173	11.3	18 779	14.0	515	12.0	2447	12.5	1199	14.0	29 017
	2	814	8.1	645	7.1	465	6.5	1562	5.2	769	7.4	14 592	10.9	394	9.2	1527	7.8	943	11.0	21 711
	≥3	1008	10.0	884	9.7	680	9.4	1614	5.3	587	5.6	16 711	12.4	479	11.2	1409	7.2	962	11.2	24 334
Inpatient bed days	0 to10	8302	82.2	7448	81.5	6301	87.5	27 261	90.3	9126	87.7	1 21 449	90.4	3680	85.7	16 398	83.5	7335	85.4	2 07 300
	11 to 25	959	9.5	889	9.7	459	6.4	1821	6.0	767	7.4	6299	4.7	297	6.9	1603	8.2	594	6.9	13 688
	>25	837	8.3	802	8.8	444	6.2	1121	3.7	518	5.0	6669	5.0	315	7.3	1627	8.3	660	7.7	12 993