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Table 2 Baseline characteristics by experimental arm (N = 1802)

From: The effect of a micronutrient powder home fortification program on anemia and cognitive outcomes among young children in rural China: a cluster randomized trial

Characteristics Control Group
(n = 610)
Free MNP Group1
(n = 1192)
P 2
Social economic status
 Age in months3 9.46 ± 1.90 9.50 ± 1.83 0.75
  Girls (%) 49.0 (299) 46.5 (544) 0.26
 Low birth weight (%) 4.4 (27) 4.7 (56) 0.80
  First birth (%) 62.3 (380) 62.7 (747) 0.88
 Families received social security support (%) 24.4 (149) 23.2 (276) 0.45
Caregiver and mother characteristics
 Mother is primary caregiver (%) 79.2 (483) 81.8 (975) 0.31
 Maternal education ≥9 years (%) 78.4 (478) 82.3 (981) 0.07
 Maternal age (year) 26.2 ± 4.3 26.5 ± 4.7 0.25
Child feeding practices
 Ever breastfed (%) 87.7 (535) 89.3 (1064) 0.36
 Exclusive or predominant breastfeeding <6 Months (%) 37.7 (230) 37.8 (451) 0.97
 Still breastfed ≥12 Months (%) 39.2 (239) 37.3 (444) 0.14
 Ever formula-fed (%) 63.4 (387) 66.4 (792) 0.07
 Supplementary feeding after six months (%) 65.9 (402) 65.3 (778) 0.87
Parenting practices
 Played with baby yesterday with toys (%) 49.8 (304) 46.7 (557) 0.12
 Sang song to baby yesterday (%) 29.0 (177) 28.7 (342) 0.78
Child nutrition status
 Hemoglobin concentration (g/L) 4 109.3 ± 13.0 109.1 ± 12.5 0.71
 Anemia prevalence (%)4 49.3 (297) 48.5 (573) 0.88
Child development status
 MDI test score5 97.2 ± 17.0 96.6 ± 16.9 0.87
 PDI test score6 90.1 ± 18.0 90.1 ± 16.7 0.85
  1. Data are presented as mean ± SD or % (n) for categorical variables
  2. 1MNP = Multiple Micronutrient Powder
  3. 2 P-values from tests of the null hypothesis of no difference between MNP and control groups, adjusted for cohort and county fixed effects and clustering within villages
  4. 3 Data missing for 4 children in the free MNP group
  5. 4Data missing for 7 children in control group and 10 in the free MNP group
  6. 5Data missing for 1 child in control group and 4 in the free MNP group
  7. 6Data missing for 2 children in control group and 5 in the free MNP group
  8. 7Data missing for 4 children in control group and 2 in the free MNP group