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Table 6 Haemoglobin levels for each of the study arms, aggregated over the 2-year trial period

From: The effect of community-driven larval source management and house improvement on malaria transmission when added to the standard malaria control strategies in Malawi: a cluster-randomized controlled trial

  Control HI LSM HI + LSM
Outcomes Mean value observed (95% CI) Mean value observed (95% CI) Estimated effect sizea (95% CI) Mean value observed (95% CI) Estimated effect sizea (95% CI) Mean value observed (95% CI) Estimated effect sizea (95% CI)
Hb, g/dL, women 15–49 years 12.31 (12.15, 12.47) 12.61 (12.49, 12.72) − 0.10 (− 0.42, 0.21) 12.21 (12.10, 12.31) − 0.11 (− 0.37, 0.15) 12.46 (12.31, 12.61) 0.01 (− 0.30, 0.33)
Hb, g/dL, children 6–59 months 10.80 (10.59, 11.01) 11.29 (11.16, 11.42) 0.17 (− 0.22, 0.56) 10.68 (10.55, 10.81) − 0.02 (− 0.34, 0.31) 11.08 (10.89, 11.27) 0.28 (− 0.15, 0.71)
Hb, g/dL, children 6–23 months 10.61 (10.26, 10.96) 10.86 (10.65, 11.07) 0.08 (− 0.44, 0.61) 10.14 (9.93, 10.35) − 0.40 (− 0.90, 0.10) 10.61 (10.28, 10.95) − 0.14 (− 0.70, 0.42)
  1. Hb haemoglobin level, HI house improvement, LSM larval source management
  2. aEffect size estimates are based on individual-level generalized linear models with the control arm as the reference category