Table 1. Comparison of the sociodemographic characteristics of the case and control groups.

Group	Case		Control		p	OR	95%CI
	n	%	n	%			Lower	Upper
Age Group
31–40 years	12	13.3	19	24.7	0.07	0.38	0.14	1.05
41–50 years	34	37.8	23	29.9	0.80	0.89	0.36	2.17
51–59 years	24	26.7	23	29.9	0.33	0.63	0.25	1.58
≥ 60 years	20	22.2	12	15.6	0.170	0.81	0.59	1.10
	90	100.0	77	100.0
Marital status
Single	41	45.6	27	35.1
Married	49	54.4	50	64.9	0.170	1.55	0.83	2.90
Total	90	100.0	77	100.0
Level of schooling
Illiterate	7	7.8	3	3.9	0.22	3.27	0.51	24.84
Lower than high school	47	52.2	48	62.3	0.38	1.84	0.47	7.89
High school	32	35.6	20	26.0	0.23	2.37	0.58	10.58
Higher education	4	4.4	6	7.8	0.926	1.02	0.66	1.59
Total	90	100.0	77	100.0
Religion
Catholic	34	38.2	40	51.9	0.042	0.61	0.37	0.98
Evangelical	49	55.1	35	45.5	0.12	1.64	0.87	3.11
Spiritist	1	1.1	1	1.3	0.92	1.17	0.03	47.0
Others	5	5.6	1	1.3	0.10	5.77	0.75	143.2
Total	89	100.0	77	100.0
Occupation
Housewife	50	55.6	30	39.0	0.97	0.97	0.33	2.75
Nursing technician	3	3.3	2	2.6	0.90	0.88	0.11	9.00
Salesperson	6	6.7	3	3.9	0.88	1.16	0.21	7.29
Housemaid	5	5.6	11	14.3	0.07	0.28	0.06	1.12
Dressmaker	3	3.3	11	14.3	0.02	0.17	0.03	0.79
Receptionist	2	2.2	2	2.6	0.66	0.60	0.05	6.83
Retired	8	8.9	6	7.8	0.74	0.78	0.18	3.37
Teacher	1	1.1	5	6.5	0.07	0.13	0.00	1.14
Others	12	13.3	7	9.1	0.170	1.08	0.97	1.19
Total	90	100.0	77	100.0
Income
≤ 1 MW	39	45.9	25	33.3	0.195	1.74	0.75	4.01
1–2 MW	29	34.1	31	41.3	0.920	1.05	0.46	2.39
≥ 3 MW	17	20.0	19	25.3	0.145	1.35	0.90	2.03
Total	85	100.0	75	100.0
Origin
Capital city (Goiânia)	55	61.1	42	54.5	0.590	1.17	0.65	2.11
Cities in the interior of the state	33	36.7	35	45.5
Others States	2	2.2	0	0.0
Total	90	100.0	77	100.0

Abbreviations: 95% CI, 95% confidence interval; MW, minimum wage; OR, odds ratio.

Note: Univariate analysis test; values of p ≤ 0.05 were considered statistically significant.