You are viewing the site in preview mode

Skip to main content

Advertisement

Table 2 Stratified analysis of the sensitivity and specificity of cholera dipstick test according to specimen (bulk stool or enriched rectal swab) and treatment (intravenous fluids or no intravenous fluids)

From: Field evaluation of a rapid immunochromatographic dipstick test for the diagnosis of cholera in a high-risk population

Dipstick test Bacteriological culture Total
  Positive Negative  
IV treatment – enriched rectal swab a    
Positive 45 3 38
Negative 0 40 40
   Total 45 43 78
IV treatment – bulk stool b    
Positive 57 10 67
Negative 2 31 33
   Total 59 41 100
No IV treatment – enriched rectal swab c    
Positive 19 1 20
Negative 2 109 111
   Total 21 110 131
No IV treatment – bulk stool d    
Positive 10 13 23
Negative 3 46 49
   Total 13 59 72
  1. NOTE: IV = intravenous fluids were given.
  2. a Sensitivity was 100%; specificity was 93% (85–100); positive predictive value was 94%; and Kappa value was 0.93 (p < 0.05).
  3. b Sensitivity was 97% (92–100%); specificity was 76% (62–89%); positive predictive value was 85%;and Kappa value was 0.74 (p < 0.05).
  4. c Sensitivity was 91% (78–100%); specificity was 99% (97–100%); positive predictive value was 95%;and Kappa value was 0.91 (p < 0.05).
  5. d Sensitivity was 77% (54–100%); specificity was 78% (67–89%); positive predictive value was 43%;and Kappa value was 0.42 (p < 0.05).