Table 4 Risk ratios for TST positivity by demographic and clinical characteristic. Adjusted results are presented for complete case analysis (n = 1878 patients^a) and analysis using combined results of 20 imputed datasets (n = 2303 patients). Risk ratios marked with an asterisk (*) are statistically significant. CI = confidence interval

Age, years (per 5-year increase)

–

0.99 (0.97–1.02)

1.00 (0.97–1.04)

1.01 (0.98–1.04)

 Male

233/1065 (21.9%)

Reference

Reference

Reference

 Female

223/138 (18.0%)

0.80 (0.68–0.95)*

0.78 (0.65–0.94)*

0.80 (0.68–0.95)*

 Inuit

306/1220 (25.1%)

Reference

Reference

Reference

 Non-Inuit

90/658 (13.7%)

0.58 (0.47–0.73)*

0.64 (0.50–0.83)*

0.68 (0.54–0.86)*

 Tuberculosis exposure

199/606 (32.8%)

Reference

Reference

Reference

 Employment screening

67/506 (13.2%)

0.45 (0.35–0.57)*

0.59 (0.45–0.78)*

0.58 (0.45–0.75)*

 School screening

34/297 (11.4%)

0.40 (0.28–0.57)*

0.36 (0.22–0.60)*

0.48 (0.33–0.70)*

 Self or physician referral

124/746 (16.6%)

0.62 (0.51–0.75)*

0.67 (0.55–0.83)*

0.69 (0.57–0.83)*

 2012

201/759 (26.5%)

Reference

Reference

Reference

 2013

101/547 (18.5%)

0.64 (0.52–0.80)*

0.64 (0.51–0.80)*

0.65 (0.53–0.80)*

 2014

95/498 (19.1%)

0.75 (0.61–0.92)*

0.73 (0.59–0.92)*

0.77 (0.63–0.94)*

 2015

45/425 (10.6%)

0.39 (0.30–0.51)*

0.41 (0.30–0.56)*

0.45 (0.34–0.59)*

 2016

12/74 (16.2%)

0.66 (0.42–1.05)

0.75 (0.45–1.24)

0.77 (0.50–1.20)