Prevalence of Malaria Infection and Risk Factors Associated with Anaemia among Pregnant Women in Semiurban Community of Hazaribag, Jharkhand, India

Table 3

Positive predictive value (PPV) of clinical signs and symptoms for Plasmodium vivax infection.

		Observed value (OV) (%)	Positive; predictive value (PPV) (%)	95% CI in; proportion of PPV (%)
Sign/symptoms at ANC
Fever	54	4.2	26	23.5–28.4
History of fever	167	13.1	45	42.2–47.7
Headache	114	8.9	32	29.4–34.5
Body pain	15	1.2	18	15.8–20.1
Dizziness	29	2.3	21	18.7–23.2
Vomiting	22	1.7	23	20.3–25.3
Convulsions	13	1.1	12	10.2–13.7
Sign/symptoms at DU
Fever	43	4.9	36	32.8–39.1
History of fever	93	10.6	47	43.6–50.3
Headache	172	19.7	33	29.8–36.1
Body pain	23	2.6	26	23.1–28.9
Dizziness	19	2.2	19	16.3–21.6
Vomiting	31	3.5	27	24.1–29.9
Convulsions	14	1.6	21	18.2–23.7