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Table 1 Selected characteristics compared between the subset of women who were eligible for this analysis and all other women recruited into the case control study

From: A cross sectional study of anemia and iron deficiency as risk factors for arsenic-induced skin lesions in Bangladeshi women

Characteristic All women (n = 543) Subset (n = 147) p value
Variables n Mean ± SD n Mean ± SD  
  Age (years) 542   34.9 ± 11.3 147   25.5 ± 5.0 <0.001
   Median ± IQR   Median ± IQR  
  Water As (μg/L) 526   32.9 ± 269.4 146   17.2 ± 120.4 0.02
  Toenail As (μg/g) 540   2.70 ± 6.97 145   2.12 ± 3.65 0.10
   %   %  
Skin Lesions      0.80
  No 272   50.18 72   48.98  
  Yes 270   49.82 75   51.02  
Body Mass Index (kg/m2)      0.70
  <18.5 158   29.10 44   29.93  
  18.5–24.9 332   61.14 92   62.59  
  ≥25 53   9.76 11   7.48  
Marital Status      <0.001
  Not married 72   13.33 37   25.17  
  Ever married 468   86.67 110   74.83  
Education      <0.001
  No formal education 318   58.56 53   36.1  
  Primary 74   13.63 17   11.56  
  Secondary and above 150   27.62 77   52.38  
Chews betel nut      <0.001
  No 385   71.2 131   89.7  
  Yes 156   28.8 15   10.3  
Water Arsenic      0.16
  ≤10 ug/L 196   36.10 65   44.22  
  10–50 ug/L 130   23.94 34   23.13  
  >50 ug/L 217   39.96 48   32.65  
Hemoglobin (g/L)      0.99
  Normal (Hb ≥120 g/L) 443   81.58 120   81.63  
  Anemia (Hb <120 g/L) 100   18.42 27   18.37