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Table 1 Number of leprosy recurrence per therapeutic scheme (N), sum of person-years at risk of leprosy recurrence (py), incidence rate (N/py), incidence rate ratio (IR/IR) and 95% confidence interval of IRR

From: Underlying mechanisms of leprosy recurrence in the Western Amazon: a retrospective cohort study

Therapeutic scheme

N

Person-Year (py)

Incidence rate (IR)

Incidence rate ratio (IRR) (ref: MDT30+)

95% CI (IRR)

ROM

14

60.85

0.23

3.3a

2.39, 4.2

DDS

45

574.14

0.08

1.12

0.33, 1.92

MDT0–9

72

476.45

0.15

2.17a

1.39, 2.94

MDT10–19

37

273.52

0.14

1.94a

1.13, 2.75

MDT20–29

49

558.68

0.09

1.26

0.47, 2.05

MDT30+

7

100.31

0.07

1

  1. aEpidemiologically relevant result with higher risk of leprosy recurrence