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Table 5 Diagnostic characteristic of measured clinical morbidity by infection category

From: Polyparasitism with Schistosoma haematobium, Plasmodium and soil-transmitted helminths in school-aged children in Muyuka–Cameroon following implementation of control measures: a cross sectional study

Diagnostic characteristic

Schistosoma haematobium

Plasmodium sp.

Haematuria

Anaemia

Microcytosis

Anaemia

Microcytosis

Sensitivity

% (95% CI)

46.5 (37.0–56.2)

80.8 (72.0–87.4)

41.4 (32.2–51.3)

79.6 (70.6–86.4)

45.9 (36.3–55.8)

Specificity

% (95% CI)

100 (98.9–100)

29.8 (25.3–34.7)

54.3 (49.2–59.4)

29.8 (25.3–34.7)

54.3 (49.2–59.4)

Positive likely ratio

(95% CI)

ND

1.15 (1.02–1.29)

0.91 (0.70–1.18)

1.13 (1.01–1.28)

1.01 (0.79–1.28)

Negative likely ratio

(95% CI)

0.54 (0.45–0.65)

0.64 (0.42–0.99)

1.08 (0.89–1.31)

0.69 (0.45–1.04)

1.00 (0.81–1.22)

Diagnostic odds ratio

(95% CI)

ND

1.79 (1.03–3.10)

0.84 (0.54–1.32)

1.66 (0.96–2.84)

1.01 (0.65–1.58)

ROC

AUC

0.698

0.539

0.477

0.531

0.504

SE

0.033

0.031

0.031

0.031

0.032

95% CI

0.633–0.763

0.479–0.598

0.415–0.539

0.471–0.592

0.441–0.566

Kappa (к)

Value

0.576

0.057

− 0.031

0.051

0.002

SE

0.050

0.026

0.040

0.026

0.040

95% CI

0.479–0.674

0.007–0.107

− 0.110–0.048

− 0.00–0.100

− 0.077–0.081

Agreement

Moderate

Slight

No agreement

Slight

Slight

  1. AUC area under the ROC curve, CI confidence interval, ND not determine as it is redundant, SE standard error, ROC receiver operating characteristics