Table 4 Crude and adjusted incident rate ratios (IRR) of low birth weight, maternal anaemia and perinatal mortality by number of detected malaria infection using Poisson regression

Maternal anaemia

   No infection (391/816)

1.00

1.00

   1 infection detected (79/169)

1.07 (0.91-1.26)

1.019 (0.85-1.21)

   ≥ 2 infections detected (28/49)

1.33 (1.04-1.69)^a

1.236 (0.94-1.62)

Low birth weight

   No infection (96/816)

1.00

1.00

   1 infection detected (31/169)

1.56 (1.08-2.26)^b

1.07 (0.73-1.58)

   ≥ 2 infections detected (12/49)

2.08 (1.29-3.52)^c

1.08 (0.62-1.87)

Perinatal mortality

   No infection (15/816)

1.00

1.00

   1 infection detected (4/169)

1.28 (0.43-3.83)

0.87 (0.27-2.83)

   ≥ 2 infections detected (0/49)

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