Table 1.
Diagnostic performance of haematuria reagent strips according to age, sex, and Schistosoma haematobium prevalence in Northern Bahr-el-Ghazal State, Southern Sudan 2009
| n | Sensitivity % (95%CI) |
Specificity % (95%CI) |
PPV % (95% CI) |
NPV % (95% CI) | |
|---|---|---|---|---|---|
| Overalla | 677 | 98 (94 - 99.5) | 59 (55 - 63) | 38 (33 - 43) | 99 (97 - 99.8) |
| Boys 5 – 10 | 186 | 100 (93 - 100) | 68 (60 - 76) | 52 (42 - 63) | 100 (96 - 100) |
| Boys 11 – 16 | 98 | 100 (87 - 100) | 74 (62 - 83) | 58 (52 - 72) | 100 (93 - 100) |
| Boys all ages | 284 | 100 (95 - 100) | 70 (63 - 76) | 54 (45 - 93) | 100 (98 - 100) |
| Girls 5 - 10 | 270 | 97 (85 - 99.9) | 52 (45 - 58) | 24 (17 - 31) | 99 (96 - 99.9) |
| Girls 11 - 16 | 122 | 93 (76 - 99) | 52 (42 - 63) | 37 (25 - 49) | 96 (87 - 99.5) |
| Girls all ages | 392 | 95(87 - 99) | 52 (46 - 57) | 28 (22 - 34) | 98 (95 - 99.6) |
| Low prevalence payamsb |
444 | 100 (94 - 100) | 54 (49 - 60) | 26 (21 - 32) | 100 (98 - 100) |
| Moderate prevalence payamsc |
155 | 96 (89 - 99) | 75 (64 - 84) | 78 (69 - 86) | 95 (87 - 99) |
a
One record was missing data for age and sex.
b
>0% and <10% prevalence. 15 of the 21 payams, with payams with 0% prevalence excluded.
c
>=10% prevalence. One of the 21 payams.
PPV, positive predictive value; NPV, negative predictive value. 95% exact binomial CI in parenthesis.