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. 2010 Aug 5;83(2):319–325. doi: 10.4269/ajtmh.2010.10-0073

Table 2.

Associations with tuberculin skin test (TST) size and positivity

Recruitment TST size Recruitment TST positivity Follow-up increase in TST size Follow-up TST conversion
Univariate regression (N = 174) Multiple regression (N = 166) Univariate regression (N = 174) Multiple regression (N = 166) Univariate regression (N = 63) Multiple regression (N = 52) Univariate regression (N = 63) Multiple regression (N = 56)
Co. P value Co. P value OR P value OR P value Co. P value Co. P value OR P value OR P value
Data collected at recruitment
Age 0.2 0.001 0.012 0.001 1.0 0.07 1.02 0.1 0.006 0.8 −0.0079 0.8 1.0 0.4 1.03 0.3
Gender −0.001 1.0 −0.0023 1.0 1.0 0.9 0.995 1.0 −0.02 0.9 0.39 0.7 1.5 0.5 1.1 0.9
BCG scars 0.3 0.005 0.29 0.009 2.7 0.03 2.4 0.01 −0.48 0.7 −1.2 0.2 0.1 0.05 0.1 0.039
Known TB contact 0.28 0.05 0.30 0.03 2.0 0.07 2.4 0.041 −0.3 0.2 0.6 0.6
Body mass index 0.003 0.8 1.0 0.7 0.02 0.2 0.21 0.1 1.2 0.09
Percent body fat 0.007 0.2 1.0 0.7 0.03 0.6 0.03 0.6
Intestinal helminth infection* −0.08 0.8 1.7 0.6 0.3 0.6
Intestinal helminth co-infection −0.11 0.4 0.6 0.2 0.09 0.9 2.1 0.3
Data collected at follow-up
Albendazole vs. placebo NA NA NA NA NA NA NA NA 0.2 0.8 1.1 0.9
Cure of helminths NA NA NA NA NA NA NA NA −0.1 0.5 0.6 0.6
Cure/reduction in egg concentration NA NA NA NA NA NA NA NA −0.2 0.1 0.5 0.3

NA signifies that the analysis was not biologically appropriate, and – signifies that the variable did not feature in the multiple regression model (see Methods). Co = coefficient; OR = odds ratio.

*

This information could not be included in some analyses in which all participants with available data had intestinal helminth infection.