Table 3 Comparative ITS analysis model parameters^a of population-standardized monthly notification rates of All Forms and bacteriologically-confirmed TB cases for a) intervention versus control districts; and b) employee ACF versus volunteer ACF

 Baseline rate^b (β₀)

14.931

[14.721, 15.144]

< 0.001

16.028

[15.643, 16.423]

< 0.001

 Pre-intervention trend, control (β₁)

0.998

[0.998, 0.999]

< 0.001

0.997

[0.996, 0.998]

< 0.001

 Post-intervention step change, control (β₂)

0.949

[0.921, 0.977]

< 0.001

1.011

[0.966, 1.059]

0.634

 Post-intervention trend, control (β₃)

1.001

[0.999, 1.003]

0.432

1.002

[0.999, 1.004]

0.264

 Difference in baseline (β₄)

0.987

[0.970, 1.006]

0.176

0.843

[0.814, 0.873]

< 0.001

 Difference in pre-intervention trends (β₅)

0.999

[0.998, 1.000]

0.014

1.001

[1.000, 1.002]

0.174

 Difference in post-intervention step change (β₆)

1.030

[0.992, 1.070]

0.123

0.953

[0.893, 1.018]

0.155

 Difference in post-intervention trends (β₇)

1.004

[1.002, 1.006]

0.001

1.005

[1.001, 1.009]

0.021

 Baseline rate^b (β₀)

8.793

[8.466, 9.133]

< 0.001

9.898

[9.559, 10.249]

< 0.001

 Pre-intervention trend, control (β₁)

1.000

[0.999, 1.002]

0.968

0.996

[0.995, 0.998]

< 0.001

 Post-intervention step change, control (β₂)

0.984

[0.920, 1.051]

0.628

0.996

[0.933, 1.064]

0.910

 Post-intervention trend, control (β₃)

1.000

[0.996, 1.004]

0.892

1.010

[1.006, 1.014]

< 0.001

 Difference in baseline (β₄)

1.023

[0.974, 1.074]

0.367

0.828

[0.787, 0.871]

< 0.001

 Difference in pre-intervention trends (β₅)

0.997

[0.995, 0.999]

0.005

1.002

[1.000, 1.004]

0.034

 Difference in post-intervention step change (β₆)

1.055

[0.969, 1.150]

0.218

1.098

[1.001, 1.204]

0.048

 Difference in post-intervention trends (β₇)

1.008

[1.003, 1.014]

0.002

0.995

[0.989, 1.000]

0.069