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Table 1 Calculated accuracy, sensitivity, specificity, positive and negative predictive value for significant bacteriuria compared to reference quantitative bacterial culture. Brachets is one-sided 95% confidence interval limits

From: The effect of urine storage temperature and boric acid preservation on quantitative bacterial culture for diagnosing canine urinary tract infection

Storage condition

   

Predictive value

 

Time

Method

n

Sensitivity

Specificity

Positive

Negative

Accuracy

24 h

Non-preserved, COOL

169

0.98

0.94

0.96

0.97

97%

 

(0.93–1.00)

(0.86–0.98)

(0.90–0.99)

(0.90–1.00)

 

UriSwab™, ROOM

169

0.97

0.98

0.99

0.96

98%

 

(0.91–0.99)

(0.92–1.00)

(0.95–1.00)

(0.87–0.99)

 

48 h

Non-preserved, COOL

177

0.97

0.95

0.97

0.96

96%

 

(0.92–0.99)

(0.88–0.99)

(0.92–0.99)

(0.88–0.99)

 

UriSwab™, ROOM

177

0.93

0.97

0.98

0.89

94%

 

(0.86–0.97)

(0.89–1.00)

(0.93–1.00)

(0.79–0.95)

 
  1. COOL Urine stored refrigerated, ROOM Urine stored in boric acid (UriSwab™) at room temperature
  2. Calculated accuracy, sensitivity, specificity, positive and negative predictive value for significant bacteriuria compared to reference quantitative bacterial culture. Brackets is one-sided 95% confidence interval limits