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Table 1 Distribution of the results of the malaria tests using RDT and microscopy and their association with selected children characteristics in the Nigeria 2015 MIS

From: On the discriminatory and predictive accuracy of the RDT against the microscopy in the diagnosis of malaria among under-five children in Nigeria

Children Characteristic Number (n = 7011) % Malaria test results
RDT+ (%) x2 p-value Micro+ (%) x2 p-value
Child’s age (months)
 0–6 755 10.8 21.6 < 0.001* 10.0 < 0.001*
 7–23 1914 27.3 36.2   20.3  
 24–59 4342 61.9 49.5   30.9  
Sex
 Male 3574 51.0 46.2 0.063 27.8 0.276
 Female 3437 49.0 44.0   26.9  
Location
 Urban 2350 33.5 24.1 < 0.001* 11.4 < 0.001*
 Rural 4661 66.5 55.7   35.6  
Zone
 North Central 1309 18.7 50.7 < 0.001* 32.1 < 0.001*
 North East 983 14.0 42.9   26.5  
 North West 2286 32.6 58.2   37.1  
 South East 601 8.6 31.7   13.9  
 South South 780 11.1 28.9   19.4  
 South West 1053 15.0 32.1   15.3  
Usual resident
 No 69 1.0 36.8 0.147 25.2 0.598
 Yes 6942 99.0 45.2   27.4  
Wealth quintile
 Poorest 1474 21.0 64.1 < 0.001* 43.1 < 0.001*
 Poorer 1612 23.0 62.7   41.0  
 Middle 1333 19.0 49.2   27.7  
 Richer 1289 18.4 30.2   16.8  
 Richest 1303 18.6 12.7   4.3  
Slept under ever treated net
 No 3963 56.5 42.1 < 0.001* 25.7 < 0.001*
 Yes 3048 43.5 49.0   29.5  
Slept under LLITNs
 No 3980 56.8 42.0 < 0.001* 25.7 < 0.001*
 Yes 3031 43.2 49.1   29.5  
Fever in last 2 weeks
 No 4123 59.0 37.4 < 0.001* 23.7 < 0.001*
 Yes 2868 41.0 55.1   32.1  
Anaemia level
 Severe 224 3.7 87.6 < 0.001* 67.4 < 0.001*
 Moderate 2376 39.4 61.9   40.6  
 Mild 1524 25.3 37.5   20.6  
 Not anaemic 1905 31.6 25.1   12.9  
 Total 7011 100.0 41.5   27.3  
  1. RDT+ positive on the rapid diagnostic test, Micro+ positive on microscopy test
  2. * Significant at 5% x2 test