Subjects: UNDOCUMENTED immigrants; AGE distribution; CHI-squared testMEXICO; CALIFORNIA
Record details
Subjects: HIV prevention; INTRAVENOUS drug abuse; DRUG abuse risk factorsMEXICO; UNITED States
Subjects: CHI-squared test; CONFIDENCE intervals; FISHER exact testCALIFORNIA; MEXICO; UNITED States
Subjects: *HIV prevention; *SUBSTANCE abuse treatment; *INTRAVENOUS drug abuseMEXICO; UNITED States
Subjects: *CHI-squared test; *COMPARATIVE studies; *MENTAL depressionCALIFORNIA; MEXICO