Plasmodium vivax infection: a major determinant of severe anaemia in infancy

Malaria Journal

Table 2 Haemoglobin by presence of parasitaemia (regardless of presence of symptoms) and demographic characteristics

	N	Mean Hb	Std dev	Coef (95 % CI)
Plasmodium species
Negative	3229	11.2	2.41	0
P. falciparum	315	9.8	2.43	−1.38 (−1.67, −1.09)
P. vivax	250	10.2	2.58	−0.99 (−1.33, −0.65)
P. malariae	24	8.9	2.42	–
Mixed infection	72	9.4	2.65	−1.84 (−2.52, −1.17)
Gender and pregnancy status
Male	1874	11.4	2.70	0.85 (0.69, 1.00)
Female non-pregnant	1929	10.6	2.18	0
Female pregnant	87	10.1	1.86	−0.47 (−0.88, −0.07)
Ethnicity
Non-Papuan	1823	11.9	2.27	0
Highland Papuan	1044	10.0	2.48	−1.82 (−2.06, −1.58)
Lowland Papuan	1023	10.5	2.32	−1.35 (−1.58, −1.12)
Age (years)
<1	177	9.4	1.64	−2.35 (−2.63, −2.07)
1–5	642	9.8	1.98	−1.91 (−2.09, −1.72)
5–15	821	10.4	2.03	−1.29 (−1.47, −1.10)
>15	2250	11.7	2.56	0
Weight for age/gender/ethnicity
≥Mean	1809	11.2	2.47	0
<Mean	2081	10.8	2.47	−0.42 (−0.59, −0.25)
Household income per person
>75th centile	823	11.3	2.35	0.14 (−0.13, 0.40)
25th–75th centile	1776	11.2	2.51	0
<25th centile	974	10.7	2.43	−0.46 (−0.74, −0.18)
All	3890	11.0	2.48	–

Hb haemoglobin, Std dev standard deviation, n number, coef linear regression coefficient, 95 % CI 95 % confidence interval

ISSN: 1475-2875