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Table 2 Demographics, Risk Factors and Behaviors among Study Population with Latent TB Infection

From: Predictors of latent tuberculosis treatment initiation and completion at a U.S. public health clinic: a prospective cohort study

Variable N (%) or N (%) or P value N (%) or P value
  Mean (SD) Mean (SD)   Mean (SD)  
  Total Population Who Initiated Therapy   Who Completed Therapy  
Race/ethnicity      
 Asian/Pacific      
 Islander 70 (14) 16 (23) 0.2 12 (75) 0.1
 Non-Hispanic White 64 (13) 10 (16)   3 (30)  
 Non-Hispanic Black 254 (51) 67 (26)   39 (58)  
 Hispanic 92 (19) 28 (30)   12 (43)  
 Other/unknown 16 (3)     
Gender      
 Male 236 (48) 67 (28) 0.3 39 (58) 0.3
 Female 260 (52) 63 (24)   31 (49)  
Mean age 39.1 (12.3) 42.1 (38.0) <0.01 42.8 (41.2) 0.5
US-born 169 (34) 57 (34) 0.01 26 (46) 0.07
Region of birth      
 Developed world (US, Canada,      
 Western Europe, Japan)* 175 (35) 57 (33) 0.01 26 (46) 0.03
 Africa 94 (19) 17 (18) 0.23 13 (77) 0.04
 Asia 65 (13) 16 (25) 0.07 12 (75) 1
 Eastern Europe 13 (3) 1 (8) 0.87 0 (0) 0.8
 Latin America 98 (20) 31 (32) 0.06 15 (48) 1
 Middle East 19 (4) 2 (11) 0.12 1 (50) 1
 Other/unknown 32 (7) 6 (19)   3 (50)  
Reason for skin testing      
 Employment screening * 304 (61) 50 (17) <0.01 25 (50) 0.3
 Contact to TB case 94 (19) 50 (53) <0.01 30 (60) 1
 Non-employment reason 98 (20) 30 (31)   15 (50)  
Mean distance from health department (miles)   7.9 (9.5) 0.4 8.0 (7.7) 0.9
Neighborhood poverty level      
 Low poverty 74 (20) 16 (22) 0.6 13 (81) 0.08
 Moderate poverty 155 (41) 39 (25)   19 (49)  
 High poverty 149 (39) 42 (28)   22 (42)  
Alcohol use      
 None 316 (64) 82 (26) 0.7 41 (50) 0.3
 <1 drink/day 106 (21) 31 (29)   22 (71)  
 1-2 drinks/day 23 (5) 5 (22)   2 (40)  
 3+ drinks/day 23 (5) 4 (17)   2 (50)  
 Binge 15 (3) 5 (33)   2 (40)  
Smoking      
 None 322 (65) 84 (26) 0.7 51 (61) 0.04
 Former 59 (12) 18 (31)   10 (56)  
 Current 100 (20) 25 (25)   8 (32)  
Crack cocaine use 34 (7) 12 (35) 0.2 4 (33) 0.2
Diabetes 28 (6) 11 (39) 0.1 7 (64) 0.5
ESRD 3 (1) 3 (100) 0.02 1 (33) 0.6
Gastrectomy 6 (1) 3 (50) 0.2 3 (100) 0.3
Heroin use 8 (2) 2 (25) 1 0 (0) 0.2
Homeless 53 (11) 18 (34) 0.2 8 (44) 0.4
IV drug use 12 (2) 3 (25) 1 0 (0) 0.1
Immunosuppressed 7 (1) 5 (71) 0.02 1 (20) 0.2
Prior incarceration 67 (14) 24 (36) 0.06 9 (38) 0.07
Long term care facility 71 (14) 12 (17) 0.05 8 (67) 0.4
Evidence of old TB on CXR 11 (2) 1 (9) 0.3 0 (0) 0.4
History of organ or bone marrow transplantation 1 (0) 0 (0) 1 0 (0) 1
Underweight 9 (2) 2 (22) 1 1 (50) 1
HIV 6 (1) 4 (67) 0.03 0 (0) 0.05
  1. *Used as reference category for 2-group comparisons to calculate p-value.
  2. P-values represent differences in proportions initiating/completing treatment among responses (not including missing responses).