TABLE 4.

Multivariate logistic regression for positive T-SPOT.TB and TST results (n = 390)a

VariableT-SPOT.TBTST
% Positive (n)Crude OR (95% CI)Adjusted OR (95% CI)% Positive (n)Crude OR (95% CI)Adjusted OR (95% CI)
AgeNAc1.04 (1.02-1.06)*1.04 (1.01-1.06)*NA1.06 (1.03-1.10)*1.06 (1.02-1.09)*
Gender
    Male20.3 (15)1.001.0093.9 (31)1.001.00
    Female79.7 (59)1.57 (0.82-3.01)1.54 (0.76-3.12)6.1 (2)0.34 (0.08-1.46)0.23 (0.04-1.24)
Ethnicity
    Caucasian29.7 (22)1.001.0021.2 (7)1.001.00
    African-American43.2 (32)1.18 (0.65-2.15)1.63 (0.83-3.20)45.5 (15)1.76 (0.70-4.45)2.84 (0.97-8.28)
    Hispanic32.4 (20)1.36 (0.69-2.66)1.73 (0.76-3.94)33.3 (11)2.38 (0.88-6.38)1.69 (0.46-6.18)
Birth country
    United States82.4 (61)1.001.0063.6 (21)1.001.00
    Other17.6 (13)2.11 (1.04-4.29)*2.28 (0.92-5.69)36.4 (12)6.23 (2.79-13.89)*6.61 (1.98-22.01)*
Prior incarceration
    No10.8 (8)1.001.0024.2 (8)1.001.00
    Yes89.2 (66)1.13 (0.50-2.53)1.32 (0.53-3.28)75.8 (25)0.37 (0.16-0.88)*0.41 (0.14-1.19)
Intravenous drug use
    No77.0 (57)1.001.0081.8 (27)1.001.00
    Yes23.0 (17)2.65 (1.38-5.09)*2.92 (1.36-6.27)*18.2 (6)1.62 (0.63-4.16)2.54 (0.78-8.27)
Lived in shelterb
    No74.3 (55)1.001.0072.7 (24)1.001.00
    Yes25.7 (19)2.14 (1.16-3.94)*1.74 (0.87-3.50)27.3 (9)2.10 (0.93-4.77)2.78 (1.00-7.72)
HIV status
    Negative94.6 (35)1.001.0086.4 (19)1.001.00
    Positive5.4 (2)0.24 (0.03-1.84)0.16 (0.02-1.33)13.6 (3)0.001 (0.00-99.9)0.001 (0.00-99.9)
  • a *, P < 0.05.

  • b History of living in nursing homes, homeless shelters, drug rehabilitation centers, or “bunkhouses.”

  • c NA, not applicable.