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Table 2 Study design for medical records selected for review

From: Performance of passive case detection for malaria surveillance: results from nine countries in Mesoamerica and the Dominican Republic

  Belize Colombia Costa Rica Dominican Republic El Salvador Guatemala Honduras Nicaragua Panama Total
Total medical records selected for reviewa
(including replacements)
897 278 983 632 842 1269 1868 1233 645 8647
Selected medical records that could not be located for reviewb 39 11 120 122 33 8 935 139 7 1414
All medical records screened for eligibilityc 858 267 863 510 809 1261 933 1094 638 7233
Ineligible medical records replacedd 7 13 19 44 196 33 81 128 72 593
Eligible medical records collectede
(starting point of algorithm)
851 254 843 466 613 1228 852 966 566 6639
Suspected malaria casesf (denominator) 836 254 364 460 516 1196 801 891 555 5873
  1. aConsiders all medical records selected from the sampling frame (logbook, list of diagnoses or discharge records)
  2. bPhysical or electronic medical records that could not be located
  3. cMedical records located, and screened
  4. dReplaced after screening for eligible diagnosis or febrile illness of defined aetiology
  5. eMedical records fully reviewed
  6. fMedical records that met the definition of suspected malaria case