INS and diabetes mellitus: Figure 6 shows the resulting Kaplan–Meier curves which are significantly different (log-rank p-value: <0.0001), indicating that over time insulin users have a lower risk of TB compared to diabetics who do not use insulin. Careful examination of the data used to create Figure 6 revealed that our dataset had a very small number of patients with DM who were diagnosed with TB in the time range of 240–290 weeks after DM onset and did not use insulin, and so our model produced a slightly biased estimate of the hazard in that region, resulting in a small plateau in the relevant section of the curve.