Seroprevalence and factors associated with hepatitis B virus infection among the hill tribe youths, northern Thailand

BMC Infectious Diseases

Table 2 Risk behaviors among the participants

Characteristics	n	%
Smoker
No	726	86.8
Yes	110	13.2
Alcohol use
No	656	78.5
Yes	180	21.5
Methamphetamine us
No	817	97.7
Yes	19	2.3
Heroin use
No	823	98.4
Yes	13	1.6
Crystal methamphetamine use
No	825	98.7
Yes	11	1.3
Opium use
No	824	98.6
Yes	12	1.4
Marijuana use
No	800	95.7
Yes	36	4.3
Tattooed
No	725	86.7
Yes	111	13.3
Ear piercing
No	302	36.1
Yes	534	63.9
History of blood transfusion
No	803	96.1
Yes	33	3.9
History of organ transplant
No	828	99.0
Yes	8	1.0
History of medical surgery
No	733	87.7
Yes	103	12.3
Injection from illegal practitioners
No	803	96.1
Yes	33	3.9
Acupuncture
No	821	98.2
Yes	15	1.8
Work experience outside the village
No	693	82.9
Yes	143	17.1
Work experience abroad
No	826	98.8
Yes	10	1.2
Used a shared toothbrush
No	656	78.5
Yes	180	21.5
History of hepatitis B vaccination
Yes	71	8.5
No	298	35.7
Not sure	261	31.2
Unknown	206	24.6
Family member history of hepatitis
No	481	57.5
Yes	24	2.9
Not sure	120	14.4
Unknown	211	25.2
Sexual experience
No	593	70.9
Yes	243	29.1
Used a condom during first sexual intercourse
No	109	44.9
Yes	120	49.4
Unremembered	14	5.7
Number of partners (persons)
None	593	70.9
1	147	17.6
≥ 2	96	11.5