Table 5 GLS linear regression: malaria microscopy blood slide staining and reading observation scores

Covariates

 RDT observation score

0.5 [0.4, 0.7]***

 Malaria blood slide preparation observation score

0.6 [0.5, 0.7]***

0.4 [0.3, 0.5]***

 All SOPs for malaria microscopy are present

  Yes

Reference

  No

− 5.5 [− 12.8, 1.8]

 All bench aids for malaria microscopy are present

  Yes

Reference

  No

− 0.6 [− 7.5, 6.3]

 Conducts malaria species identification

  Yes

6.5 [1.2, 11.9]*

3.7 [− 1.8, 9.2]

  No

Reference

Reference

 Uses parasites/µL for parasite quantitation

  Yes

7.2 [2.6, 11.8]**

− 0.4 [− 6.1, 5.3]

  No

Reference

Reference

 Uses “plus system” for parasite quantitation

  Yes

− 13.3 [− 17.3, − 9.4]***

− 7.2 [− 12.2, − 2.1]**

  No

Reference

Reference

 Uses microscopy positive controls

  Yes

7.4 [2.4, 12.3]**

3.7 [− 0.9, 8.3]

  No

Reference

Reference

 Stores stained microscopy slides for cross-checking

  Yes

4.5 [0.2, 8.8]*

2.0 [-2.7, 6.6]

  No

Reference

Reference

 Stock-outs of malaria microscopy consumables

  Yes

− 3.2 [− 7.3, 0.9]

  No

Reference

 Stock-outs of RDTs

  Yes

− 3.6 [− 9.5, 2.3]

  No

Reference

 Periodicity of OTSS assessments

  All assessments occurred within a 1 year period

12.3 [4.9, 19.7]**

8.7 [2.7, 14.7]**

  All assessments occurred in > 1 year period

Reference

Reference

 Number of OTSS visits

  1

Reference

Reference

  2

1.2 [− 3.7, 6.1]

− 3.1 [− 9.4, 3.2]

  3

5.6 [0.7, 10.4]*

− 2.7 [− 8.7, 3.4]

  4

11.0 [6.1, 15.8]***

− 0.2 [− 6.5, 6.1]