Table 1

Characteristics of this study population

Characteristics	Male cases (n=204)	%	Male controls (n=332)	%	P value	Female cases (n=117)	%	Female controls (n=273)	%	P value
Age at interview (years)					0.0002					0.0386
20–49	20	9.80	16	4.82		10	8.55	24	8.79
50–59	48	23.53	52	15.67		26	22.22	48	17.58
60–69	79	38.73	112	33.73		45	38.46	76	27.84
≥70	57	27.94	152	45.78		36	30.77	125	45.79
Smoking					0.6712					0.4196
Never	103	50.49	155	46.69		62	52.99	164	60.07
Current	16	7.84	26	7.83		4	3.42	9	3.30
Ex	85	41.67	151	45.48		51	43.59	100	36.63
Ethnicity					0.8861					0.1102
European/Pakeha*	189	92.65	304	91.56		106	90.60	259	94.87
Māori†	8	3.92	14	4.22		6	5.13	11	4.03
Pacific and others	7	3.43	14	4.22		5	4.27	3	1.10
Deprivation Index Quintile					0.0235					0.1386
1–2 (least deprived)	76	37.25	83	25.00		23	19.66	82	30.04
3–4	51	25.00	83	25.00		28	23.93	60	21.98
5–6	32	15.69	71	21.39		36	30.77	58	21.24
7–8	27	13.24	64	19.28		16	13.68	44	16.12
9–10 (most deprived)	18	8.82	31	9.33		14	11.96	29	10.62
Highest education					0.2947					0.2481
Primary school	1	0.49	7	2.11		0	0	6	2.20
Secondary school (college)	91	44.61	154	46.39		53	45.30	123	45.05
Technical or trade school diploma	70	34.31	94	28.31		35	29.92	61	22.34
Undergraduate university degree	28	13.73	45	13.55		18	15.38	53	19.41
Postgraduate university degree	14	6.86	32	9.64		11	9.40	30	11.00