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Table 4 Covariates associated with error count data at two time-points using generalized estimating equation models (n = 103)

From: Evaluation of malaria rapid diagnostic test (RDT) use by community health workers: a longitudinal study in western Kenya

Variable Total errors Safety errors Accuracy errors
MER (95% CI) P value MER (95% CI) P value MER (95% CI) P value
Time
 Baseline 1.00 (referent)   1.00 (referent)   1.00 (referent)  
 Follow-up 0.88 (0.72–1.07) 0.208 1.65 (0.96–2.82) 0.066 0.51 (0.40–0.63) 0.000*
Gender
 Female 1.00 (referent)   1.00 (referent)   1.00 (referent)  
 Male 0.91 (0.70–1.18) 0.497 1.16 (0.64–2.10) 0.626 1.06 (0.82–1.36) 0.656
Age (years)
 ≤ 39 1.00 (referent)   1.00 (referent)   1.00 (referent)  
 40–49 0.91 (0.71–1.18) 0.486 1.37 (0.61–3.07) 0.440 0.87 (0.71–1.12) 0.308
 ≥ 50 1.39 (1.04–1.87) 0.025* 3.58 (1.64–7.81) 0.001* 1.24 (0.93–1.65) 0.144
Education
 Primary or less 1.00 (referent)   1.00 (referent)   1.00 (referent)  
 Secondary or greater 1.09 (0.86–1.37) 0.475 1.17 (0.64–2.17) 0.599 1.21 (0.97–1.52) 0.097
CHW experience
 None 1.00 (referent)   1.00 (referent)   1.00 (referent)  
 Experience 0.94 (0.75–1.17) 0.584 0.75 (0.41–1.37) 0.349 1.01 (0.82–1.26) 0.910
Malaria experience
 None 1.00 (referent)   1.00 (referent)   1.00 (referent)  
 Experience 1.10 (0.87–1.40) 0.424 1.30 (0.66–2.53) 0.442 1.21 (0.95–1.53) 0.121
RDT experience
 None 1.00 (referent)   1.00 (referent)   1.00 (referent)  
 Experience 0.95 (0.67–1.36) 0.787 1.21 (0.51–2.87) 0.660 1.14 (0.79–1.63) 0.488
Deki experience
 None 1.00 (referent)   1.00 (referent)   1.00 (referent)  
 Experience 0.91 (0.71–1.16) 0.450 1.36 (0.75–2.46) 0.318 1.07 (0.85–1.36) 0.537
  1. Mean error ratios (MER) were used to compare CHWs that belonged to categorically different covariate groups
  2. n = 90 for baseline observations; n = 103 for follow-up observations
  3. * Denotes statistically significant result (P < 0.05)