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
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) | ||||||