Skip to main content

Table 2 Dipstick test result for leukocyte esterase and nitrite in relation with culture result of ABU, symptomatic UTI and overall UTI in FHRH, Bahirdar, October 2010-January 2011

From: Diagnostic accuracy of rapid urine dipstick test to predict urinary tract infection among pregnant women in Felege Hiwot Referral Hospital, Bahir Dar, North West Ethiopia

Type of UTI Dipstick tests Culture Sensitivity Specificity PPV NPV
Positive No(%) Negative No(%) Total No(%)
ABU LE Positive 14(29.9) 33(70.2) 47(14.2) 50.0% 89.1% 29.8% 95.1%
Negative 14(5) 269(95) 283(85.8)
Total 28(8.5) 302(91.5) 330(100)
Nitrites Positive 10(62.5) 6(37.5) 16(4.9)     
Negative 18(5.7) 296(94.3) 314(95.1) 35.7% 98% 62.5% 94.3%
Total 28(8.5) 302(91.5) 330(100)     
Symptomatic UTI LE Positive 5(62.5) 3(37.5) 8(21.6)     
Negative 2(6.9) 27(93.1) 29(78.4) 71.4% 90.0% 62.5% 93.1%
Total 7(18.9) 30 (81.1) 37(100)     
Nitrites Positive 4(80) 1(20) 5(13.5)     
Negative 3(9.4) 29(90.6) 32(86.5) 57.1% 96.7% 80.0% 90.6%
Total 7(18.9) 30(81.1) 37(100)     
Overall UTI LE Positive 18(32.7) 37(67.3) 55(15.0)     
Negative 17(5.5) 295(94.5) 312(85) 51.4% 88.9% 32.7% 94.5%
Total 35(9.5) 332(90.5) 367(100)     
Nitrites Positive 15(71.4) 6(28.6) 21(5.7)     
Negative 20(5.8) 326(94.2) 346(94.3) 42.9% 98.2% 71.4% 94.2%
Total 35(9.5) 332(90.5) 367(100)     
LE or Nitrites Positive 25(71.4) 10(26.6) 35(9.5)     
Negative 10(3.0) 322(97) 332(90.5) 71.4% 97.0% 71.4% 97.0%
Total 35(9.5) 332(90.5) 367(100)     
LE and nitrites Positive 8(72.7) 3(27.3) 11(3.0)     
Negative 27(7.6) 329(92.4) 356(97) 22.9% 99.1% 72.7% 92.4%
Total 35(9.5) 332(90.5) 367(100)     
  1. key: ABU: Asymptomatic Bacteruria, LE: Leukocyte Esterase, NPV: Negative predictive value, PPV: Positive predictive value, UTI: Urinary tract infection.