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Table 2 Urinary arsenic metabolites of study participants in Sirajdikhan and Pabna at visits 1 and 2

From: Determinants of arsenic methylation efficiency and urinary arsenic level in pregnant women in Bangladesh

  Sirajdikhan   Pabna   All mothers  
  Visit 1 Visit 2 Visit 1 Visit 2 Visit 1 Visit 2
N 879 783 727 662 1606 1445
iAsIII%a 0 (0, 12.6) 0 (0, 9.9) 3.1 (0, 17.8) 0 (0, 11.5) 0 (0, 15.9) 0 (0, 10.6)
iAsV% 1.1 (0, 20.9) 1.8 (0, 26.2) 3.8 (0, 18.6) 4 (0, 20) 2.1 (0, 19.6) 2.6 (0, 23.6)
iAs% 5.7 (0, 24.1) 5.3 (0, 27.7) 11.2 (1.4, 24) 8 (0, 22.1) 8.5 (0, 24) 6.6 (0, 25.4)
MMA% 3.5 (0, 13.4) 4.3 (0, 11.8) 6 (0.6, 13.1) 5.6 (0.1, 11.3) 4.9 (0, 13.2) 4.8 (0, 11.6)
DMA% 89.5 (66.9, 100) 89.6 (66, 99.9) 82 (66.2, 95.6) 85.8 (68.9, 98) 85.7 (66.6, 100) 87.9 (67.3, 99.5)
iAsIII, μg/L 0 (0, 8.8) 0 (0, 7.7) 1.7 (0, 57.9) 0 (0, 27.8) 0 (0, 28.9) 0 (0, 16.7)
iAsV, μg/L 0.2 (0, 8.8) 0.5 (0, 12) 2.5 (0, 36) 2.1 (0, 51.9) 0.6 (0, 21.8) 0.9 (0, 22.5)
iAs, μg/L 0.7 (0, 17.8) 1.1 (0, 17.9) 7.5 (0.2, 81.8) 4.9 (0, 75.9) 2.5 (0, 52.2) 2.4 (0, 39.1)
MMA, μg/L 0.5 (0, 10.6) 1.1 (0, 11) 4.1 (0.1, 42.5) 3.4 (0, 35.1) 1.3 (0, 30.3) 1.7 (0, 21.5)
DMA, μg/L 10.9 (1.9, 121) 20.5 (3.6, 128) 54.2 (8.8, 431) 50.2 (7.4, 371) 22.5 (2.6, 297) 30 (4.5, 259)
U-As 12.2 (2, 147) 23.7 (4.3, 151) 69.9 (9.7, 531) 63.2 (8, 480) 26.5 (2.9, 376) 35.2 (5.1, 325)
U-creatinine, mg/dL 23.1 (6, 113) 34.6 (8.7, 126) 41.4 (11.6, 181) 35 (9.7, 117) 30.3 (7.5, 159) 34.9 (9.1, 123)
Adjusted iAsIII b 0 (0, 14.9) 0 (0, 10.9) 3.5 (0, 67.6) 0 (0, 50.5) 0 (0, 48.3) 0 (0, 27.7)
Adjusted iAsV 0.6 (0, 33.4) 1.3 (0, 36.5) 5.5 (0, 98.1) 6.1 (0, 123) 1.8 (0, 67.5) 2.5 (0, 77.4)
Adjusted iAs 2.7 (0, 51.6) 3.1 (0, 48.9) 15.2 (0.8, 142) 12.6 (0, 156) 6.5 (0, 98.9) 5.7 (0, 104)
Adjusted MMA 1.7 (0, 36) 2.6 (0, 24.4) 8.2 (0.4, 76.6) 8.3 (0.1, 72.5) 3.8 (0, 57.9) 4.3 (0, 52.5)
Adjusted DMA 43.2 (13.8, 369) 52.8 (21.2, 276) 114 (30.1, 577) 126 (39, 776) 65.1 (17.5, 530) 76.4 (24.8, 605)
Adjusted U-As 48.6 (16.2, 470) 61.6 (24.6, 338) 139 (37.4, 784) 154 (43.6, 972) 77.5 (19.6, 677) 90.4 (28.8, 770)
  1. a Proportions of urinary arsenic metabolites are presented as median and 5th–95th percentiles
  2. b Concentrations of urinary arsenic metabolites are creatinine-adjusted (μg/g-creatinine) and presented as median and 5th–95th percentiles