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Table 4 Comparison of survey-level standard deviations, skewness, and kurtosis of hemoglobin distributions in the 379 overlapping surveys

From: Characteristics of hemoglobin distributions in preschool children and non-pregnant women of reproductive age and their implications for establishing quality control criteria for hemoglobin data in field surveys: evidence from 483 surveys conducted in refugee settings worldwide

 

Mean SD Children (SD)

Mean SD WRA (SD)

Difference (95% CI)

Mean Skew Children (SD)

Mean Skew WRA (SD)

Difference (95% CI)

Mean Kurtosis Children (SD)

Mean Kurtosis WRA (SD)

Difference (95% CI)

Including Uganda surveys

1.39 (0.20)

1.47 (0.23)

− 0.07 (− 0.09, − 0.05)*

− 0.37 (0.23)

− 0.52 (0.37)

0.15 (0.11, 0.19)*

0.53 (0.66)

1.16 (1.17)

− 0.63 (− 0.76, − 0.50)*

Excluding Uganda surveysa

1.35 (0.14)

1.43 (0.18)

− 0.08 (− 0.09, − 0.06)*

− 0.38 (0.23)

− 0.55 (0.37)

0.17 (0.12, 0.21)*

0.55 (0.66)

1.22 (1.18)

− 0.68 (− 0.82, − 0.54)*

  1. Data exclude Hb values < 4.0 g/dL and > 18.0 g/dL. CI Confidence interval; Hb Hemoglobin; SD Standard deviation; WRA Women of reproductive age
  2. aCalculations exclude data from n = 38 overlapping surveys conducted in Uganda
  3. *P < 0.0001
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Population Health Metrics

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