Table 3. Univariable logistic regression model for predictors of discordance between the TST and IGRA (TST+/IGRA− compared to TST−/IGRA−) (n = 38).

Characteristic compared	Relative Risk	95% CI	p-value
Age (1 year increase)	1.03	1.01–1.04	0.0003
Inuit vs Canadian born non Aboriginal	1.62	0.68–3.86	0.2749
Female vs Male	0.62	0.35–1.09	0.0969
BCG status yes vs No	3.39	1.08–10.62	0.0360
BCG at infancy* vs No BCG	2.76	0.87–16.02	0.0861
BCG post-infancy vs No BCG	6.96	1.87–25.97	0.0039
Repeated BCG vs No BCG	10.44	3.05–35.82	0.0001
Repeated BCG vs BCG at infancy	3.77	1.90–7.50	0.0001
Repeated BCG vs Post-infancy	1.50	0.59–3.78	0.3897
Post-Infancy BCG vs Infancy	2.52	1.10–5.76	0.0286
10 year increase in time since last BCG	1.36	1.11–1.64	0.0019
1 increase in # of TST	1.00	0.92–1.11	0.8378
≥3 TSTs vs <3 TSTs (all TSTs)	1.42	0.82–2.48	0.2118
≥3 TSTs vs<3 TSTs (done within 4 years)	0.55	0.14–2.09	0.3804

*defined as the 1^st year of life.