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Table 2 Risk behaviors among the participants

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

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