Table 4.

Association factors with self-medication of Vietnamese farmers in Moc Chau.

Factors	Purchase and use medications without medical prescription		Purchase and use antibiotics without medical prescription
	OR	95% CI	OR	95% CI
Gender (vs. male)
Female	1.35	0.66; 2.77	1.28	0.61; 2.67
Age	0.98	0.95; 1.02	0.98	0.94; 1.01
Education (vs. under secondary)
Secondary	1.45	0.67; 3.14	1.44	0.65; 3.16
Above secondary	0.78	0.28; 2.13	0.6	0.20; 1.78
Ethnic (vs. Kinh)
Others	2.16*	0.91; 5.09	3.12***	1.34; 7.28
Health issues
Transient ischemic attack (yes vs. no)	0.76	0.28; 2.05	0.5	0.18; 1.39
Arthritis (yes vs. no)	1.68	0.68; 4.15	2.63**	1.09; 6.34
Hypertension (yes vs. no)	0.95	0.33; 2.77	1.05	0.34; 3.19
Distance to travel to a medical center (km)	1.15**	1.03; 1.28	0.96	0.88; 1.04
Difficulties in accessing health services
Far distance (yes vs no)	0.26**	0.08; 0.89	0.73	0.21; 2.50
Not have vehicles (yes vs no)	1.42	0.19; 10.68	1.93	0.26; 14.03
Dangerous and difficult travel (yes vs no)	1.66	0.50; 5.49	3.60**	1.15; 11.28
Times to visit of village health workers	0.94	0.82; 1.08	1.06	0.92; 1.21
Using medical services (vs. no inpatient and outpatient treatment)
Inpatient treatment	1.64	0.43; 6.18	4.46**	1.27; 15.70
Outpatient treatment	0.87	0.39; 1.94	0.99	0.42; 2.33
Inpatient and outpatient treatment	0.8	0.32; 1.98	1.73	0.68; 4.41

^***p < 0.01.

^**p < 0.05.

^*p < 0.1.