Table 3 compares the characteristics of patients opting out of HIV screening to those of patients not screened for unknown reasons. Attending a health care facility in the highest area of the district was associated to opting out of screening. Patients reporting illegal drug consumption and those enrolled in the third period of the study were more likely not to be screened because of unknown reasons as compared to opting out of screening.Table 3Determinants of opting out of HIV screening as compared to not being screened for unknown reasons in 307 smear positive tuberculosis patients not screened for HIV, San Juan de Lurigancho 2010–2011CharacteristicsOpted out of screeningN (%)Not screened for unknown reasonsN (%)Crude OR (95% CI) p Adjusted OR (95%CI) p Sex Female39 (36.2%)69 (63.8%)1 Male79 (39.5%)121 (60.5%)1.14 (0.70–1.85)0.595Age, in years 18–3483 (37.7%)137 (62.27%)1.04 (0.58–1.84)0761 35–4924 (36.9%)41(63.1%)1 > 5010 (45.5%)12 (54.5%)1.42 (0.53–3.79)Weight loss reported by the patient Yes94 (36.7%)162 (63.3%)0.67 (0.37–1.22)0.194 No24 (46,2%)28 (53.8%)1Location of health facility in district area Lowest area8 (24.2%)25 (75.8%)11 Middle area12 (25.5%)35 (74.5%)1.07 (0.38–3.00)0.0221.21 (0.42–3.49) Highest area63 (46.3%)73 (53.7%)2.65 (1.12–6.30)3.28 (1.32–8.18) High area35 (38.0%)57 (62.0%)1.92 (0.78–4.72)2.18 (0.86–5.56)Education Primary or less60 (40.8%)87 (59.2%)1.28 (0.76–2.16)0.627 High School36 (35%)67 (65.0%)1 Higher22 (37.9%)36 (62.1%)1.09 (0.55–2.13)Marital Status Married / cohabiting53 (44.9%)65 (55.1%)1.44 (0.88–2.35)0.219 Divorced5 (23.8%)16 (76.2%)0.56 (0.20–1.62) Single56 (35.7%)101 (64.3%)1 Widow4 (33.3%)8 (66.7%)0.90 (0.26–3.13)Illegal drug consumption Yes19 (27.5%)50 (72.5%)0.54 (0.30–0.98)0.0370.43 (0.23–0.80) No99 (41.4%)140 (58.6%)1Alcohol consumption (CAGE score) Yes7 (35.0%)13 (65.0%)0.74 (0.29–1.88)0.524 No68 (38.4%)109 (61.6%)1Ex prison inmate Yes4 (46.7%)8 (53.3%)0.81 (0.24–2.74)0.726 No114 (38.5%)182 (61.5%)1Diabetes Mellitus, as reports by the patient Yes5 (35.7%)9 (64.3%)0.90 (0.29–2.75)0.849 No113 (38.4%)181 (61.6%)1TB regimen Regimen for drug sensitive TB116 (38.0%)189 (62.0%)1 Regimens for drug resistant TB2 (66.7%)1 (33.3%)3.29 (0.29–36.6)0.315Employment Yes83 (37.6%)138 (62.4%)1 No21 (34.4%)40 (65.6%)0.88 (0.49–1.60)0.217 Student14 (53.8%)12 (46.2%)1.96 (0.87–4.45)Study Period 134 (46.6%)39 (53.4%)11 228 (40.0%)42 (60.0%)0.79 (0.40–1.53)0.0030.65 (0.33–1.31) 318 (22.0%)64 (78.0%)0.33 (0.17–0.67)0.23 (0.11–0.49) 438 (45.8%)45 (54.2%)0.99 (0.53–1.88)0.71 (0.35–1.40)Place of birth Coastal region74 (39.0%)116 (61.0%)1 Jungle region19 (41.3%)27 (58.7%)1.10 (0.57–2.12)0.663 Andean region25 (34.7%)47 (65.3%)0.80 (0.45–1.42)