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Table 4 Comparison of selected nutrient intake by characteristics of pregnant women in rural Shaanxi China 2004

From: Assessment of dietary intake among pregnant women in a rural area of western China

   Maternal BMI* Household wealth
   <18.5 n = 161 > = 18.5 n = 1213 p† Poorest n = 364 Middle n = 579 Richest n = 477 p‡
Energy (kcal) Median 2108.7 2250.7 0.015 2200.5 2214.5 2263.1 0.111
  p5,
p95¶
1288.0, 3176.4 1305.4, 3644.6   1263.4, 3546.8 1292.8, 3726.5 1366.4, 3603.1  
Protein (g) Median 55.7 61.3 0.002 59.2 59.7 62.3 0.151
  p5,
p95¶
33.0, 91.7 33.5, 105.0   35.2, 101.7 33.1, 103.1 33.5, 105.75  
Calcium (mg) Median 424.1 416.8 0.539 384.1 398.9 447.4 <0.001
  p5,
p95¶
193.5, 781.3 189.3, 856.9   183.9, 825.7 180.6, 849.8 203.1, 867.7  
Iron (mg) Median 20.6 22.3 0.028 21.6 21.7 22.6 0.016
  p5,
p95¶
12.4, 33.8 12.5, 38.6   12.2, 36.3 12.0, 38.4 13.2, 38.2  
Zinc (mg) Median 7.98 8.60 0.022 8.17 8.50 8.77 0.012
  p5,
p95¶
4.59, 12.34 4.81, 14.72   4.62, 13.91 4.62, 14.70 4.90, 14.38  
Riboflavin (mg) Median 0.84 0.88 0.078 0.82 0.88 0.92 0.002
  p5,
p95¶
0.41, 1.42 0.47, 1.59   0.44, 1.55 0.44, 1.60 0.48, 1.59  
Vitamin C (mg) Median 90.0 89.8 0.715 77.4 88.0 102.1 <0.001
  p5,
p95¶
24.4, 220.6 22.2, 246.1   21.2, 228.1 18.6, 242.4 29.4, 260.52  
Folate (μg) Median 236.0 247.8 0.095 228.2 240.0 268.0 <0.001
  p5,
p95¶
104.6, 456.4 114.4, 509.2   116.9, 477.9 104.0, 487.2 126.8, 519.7  
  1. * Data missing for 46 women
  2. † Mann-Whitney U test
  3. ‡ Kruskal Wallis test
  4. ¶5th percentile – 95th percentile of nutrient intake