of borderline significancep = 0.06
When we defined the presence of a BCG scar strictly and excluded those with scar “unknown/not sure” and repeated the Cox regression (N = 4061), BCG scar and QFT were both only of borderline significance, hazard ratios 1.7 (95% CI 0.9–3.2, p = 0.06) and 1.7 (95% CI 1.0–2.9, p = 0.07) respectively while maternal education of primary school or less or unknown remained significant at hazard ratio 1.4 (95% CI 1.0–1.9, p = 0.04).