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Table 3 Pairwise comparison of the intervention arms using mixed effects multivariate linear regression model based on zinc, ORS and joint adherence, Jan-Mar 2015

From: The effectiveness bundling of zinc with Oral Rehydration Salts (ORS) for improving adherence to acute watery diarrhea treatment in Ethiopia: cluster randomised controlled trial

Pairwise combination

P value

β coefficient a

Zinc adherence (%)

 Central bundling vs HC level bundling

0.894

−0.4

 Central bundling vs Bundling without message

0.001*

13.5

 Central bundling vs Status quo

<0.001*

17.6

 HC level bundling vs Bundling without message

0.002*

14.1

 HC level bundling vs Status quo

<0.001*

19.4

 Bundling without message vs Status quo

0.319

4.2

ORS adherence (%)

 Central bundling vs HC level bundling

0.969

0.2

 Central bundling vs Bundling without message

0.007*

11.5

 Central bundling vs Status quo

<0.001*

12.0

 HC level bundling vs Bundling without message

0.022*

10.2

 HC level bundling vs Status quo

0.003*

12.1

 Bundling without message vs Status quo

0.966

−0.3

Joint zinc and ORS adherence (%)

 Central bundling vs HC level bundling

0.965

−0.1

 Central bundling vs Bundling without message

0.002*

12.6

 Central bundling vs Status quo

<0.001*

14.8

 HC level bundling vs Bundling without message

<0.001*

12.0

 HC level bundling vs Status quo

<0.001*

15.7

 Bundling without message vs Status quo

0.673

1.8

  1. * Statistically significant association at p value of 0.05
  2. a Unstandardized multiple linear regression coefficient adjusted for number of episodes of diarrhea and level of severity of dehydration