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. 2017 Sep 6;12(9):e0183312. doi: 10.1371/journal.pone.0183312

Table 2. Incidence rate ratios for intervention effects in access rates to TB diagnostic and treatment services over the 23 months of the intervention.

Incidence rate ratio (95% CI)1 P value Incidence rate ratio (95% CI)1 P value
The first 12 months of the trial TB testing TB treatment initiation
Overall effect (unadjusted) 1.042 (0.860–1.262 0.676 0.824 (0.513–1,324) 0.676
Overall effect (adjusted) 1.152 (1.009–1.359) 0.003 1.18 (0.903–1.533) 0.114
Covariates:
Intervention Arm2 1.215 (1.071, 1.379) 0.003 1.204 (0.957, 1.515) 0.112
Baseline rate3 1.004 (1.004, 1.004) 0.000 1.025 (1.003, 1.048) 0.025
Month4 0.940 (0.906, 0.975) 0.001 1.004 (0.978, 1.031) 0.748
Gender 0.028 (0.028, 0.029) 0.000 1.255 (0.306, 5.140) 0.752
Interaction between trial arm and month5 0.948 (0.913, 0.986) 0.013 0.981 (0.944, 1.012) 0.335
Number of testing or treatment sites6 0.920 (0.919, 0.921) 0.000 1.247 (1.096, 1.419) 0.001
The last 11 months of the trial
Overall effect (unadjusted) 1.016 (0.812–1.271) 0.892 0.758 (0.445–1.290) 0.308
Overall effect (adjusted) 0.659 (0.441–0.983) 0.023 0.552 (0.397–0.767) <0.001
Covariates:
Intervention Arm2 0.648 (0.445,0.943) 0.023 0.529 (0.387, 0.722) <0.001
Baseline rate3 0.993 (0.988,0.998) 0.008 1.038 (1.021, 1.054) <0.001
Month4 0.963 (0.959,0.967) 0.002 0.974 (0.959, 0.989) 0.001
Gender 6.997 (2.421,20.231) <0.001 0.320 (0.117, 0.874) 0.026
Interaction between trial arm and month5 1.017 (0.992, 1.043) 0.180 1.044 (1.027, 1.062) <0.001
Number of testing or treatment sites6 1.119 (0.757,0.876) <0.001 1.269 (1.155, 1.395) <0.001

1Incidence Rate Ratio (IRR) = rate in Early arm/rate in Delayed arm

2Intervention status (Early/Delayed)

3Baseline testing or treatment initiation rates

4Month of observation

5interaction between intervention status and measurement time

6number of testing or treatment sites.