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Table 2 Estimated crude reduction in maternal mortality due to micronutritional supplementation and presumptive treatment of infection, by cause of maternal death.

From: Could a simple antenatal package combining micronutritional supplementation with presumptive treatment of infection prevent maternal deaths in sub-Saharan Africa?

Cause of maternal death

Proportion of all maternal deaths (range)1

Intervention

Effectiveness of intervention – reduction in deaths by cause (95% CI)2

Crude reduction in all-cause maternal mortality3

Maternal deaths prevented per year4

Severe hypertensive disorders

9.1% (3.9–21.9)

calcium supplementation

20% (3–35)

0.1–7.7%

300–19,200

Puerperal sepsis

9.7% (6.3–12.6)

anti-microbial prophylaxis

51% (0–77)

0.0–9.7%

0–24,300

Anemia

3.7% (0.0–13.2)

anti-malarial prophylaxis

38% (22–50)

0.0–1.2%5

0–3,000

  

iron supplementation

67% (31–84)

0.0–6.4%6

0–15,900

  1. 1 Source: WHO systematic review of causes of maternal deaths [9].
  2. 2 Source: Cochrane Reviews [19,22,24,26].
  3. 3 Calculated using Equation 1.
  4. 4 Assuming 250,000 deaths per year in sub-Saharan Africa [8].
  5. 5 Assuming 18% of maternal deaths caused by anemia are attributable to P falciparum infection [12].
  6. 6 Assuming 30–70% of non-malarial maternal deaths caused by anemia are attributable to iron deficiency [12-17].