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Table 4 Effect of phone calls and supervision visits on data quality, stratified by type of site

From: Impact of two interventions on timeliness and data quality of an electronic disease surveillance system in a resource limited setting (Peru): a prospective evaluation

   Error per Total Reports* (EPTR) Variation EPTR  
Type Site Group Pre Intervention
%
Intervention
%
?(CI) p-value
Clinic Phone 0.99 1.06 ↑0.07 (↓0.9 – ↑1.0) 0.888
  Visits 7.10 2.00 ↓5.10 (↓8.7 - ↓1.4) 0.007
  Control 1.94 1.02 ↓0.92 (↓3.4 - ↑1.5) 0.470
Ship Phone 8.16 6.69 ↓1.47 (↓4.6 - ↑1.7) 0.361
  Visits 7.32 6.67 ↓0.65 (↓2.4 - ↑1.1) 0.455
  Control 8.49 7.59 ↓0.90 (↓3.6 - ↑1.8) 0.519
  1. (*) Error per total reports (EPTR) = Number of errors detected in reports divided by the total number of reports, multiplied by 100