Table 1

Sociodemographic characteristics of ADs patients and control patients by sex

	Women					Men
Variable	Cases (n=937)		Controls (n=1.871)		P value	Cases (786)		Controls (1.575)		P value
Variable	N	%	N	%	P value	N	%	N	%	P value
Age (years)
<65	122	13.02	248	13.25	0.99	100	12.72	199	12.63	0.99
65–74	133	14.19	267	14.27		154	19.59	309	19.62
75–84	216	23.05	425	22.72		220	27.99	437	27.75
85 and over	466	49.73	931	49.76		312	39.69	630	40.00.
Socioeconomic (SEC) level
Very low SEC	77	8.22	155	8.28	<0.001	43	5.47	75	4.76	<0.001
Low SEC	610	65.10	1425	76.16		419	53.31	1102	69.97
Medium SEC	243	25.93	279	14.91		297	37.79	384	24.38
High SEC	7	0.75	12	0.64		27	3.44	14	0.89
Cause of death
Cancer	400	42.69	799	42.70	0.99	378	48.09	761	48.32	0.99
Mental diseases	43	4.59	86	4.60		27	3.44	56	3.56
Nervous system	93	9.93	185	9.89		62	7.89	123	7.81
Circulatory system	281	29.99	564	30.14		218	27.74	434	27.56
Respiratory system	89	9.50	176	9.41		83	10.56	165	10.48
Kidney diseases	31	3.31	61	3.26		18	2.29	36	2.29

ADs, advance directives.