Skip to main content

Advertisement

Table 1 Timeline of B-Pb (μg/dl), in lead exposed children during 60 months of follow-up by school.

From: Follow-up study on lead exposure in children living in a smelter community in northern Mexico

   Time of Follow-up (months).
School number.   0 6 12 60
1 n 79 65 59 29
  Median 7.52 6.95 6.10 3.68
  Minimum 1.99 1.86 1.7 2.3
  Maximum 34.62 27.0 25.60 10.4
2 n 71 57 51 34
  Median 13.94 13.20 12.20 4.75
  Minimum 5.38 5.35 4.70 2.02
  Maximum 43.80 41.45 35.80 30.30
3 n 97 83 73 15
  Median 9.99 8.70 9.30 4.53
  Minimum 3.90 3.85 3.95 1.78
  Maximum 41.93 40.6 34.35 7.2
4 n 51 45 43 18
  Median 12.55 10.40 9.55 5.48
  Minimum 5.83 4.05 4.15 3.48
  Maximum 34.72 26.10 25.90 12.58
5 n 58 51 50 32
  Median 8.68 6.40 7.30 5.49
  Minimum 3.0 2.90 3.10 3.36
  Maximum 20.05 16.60 18.45 8.7
6 n 70 58 55 14
  Median 14.20 11.10 12.55 3.27
  Minimum 3.30 3.80 3.30 1.30
  Maximum 41.50 36.75 35.80 9.13
7 n 52 51 47 27
  Median 10.70 8.55 8.20 4.08
  Minimum 4.40 2.90 4.25 2.35
  Maximum 22.20 18.15 17.65 7.44
8 n 72 66 66 40
  Median 9.10 8.68 8.18 3.30
  Minimum 3.70 3.45 4.05 1.43
  Maximum 17.30 16.0 13.95 7.67
9 n 48 41 37 23
  Median 7.25 5.85 5.80 4.58
  Minimum 2.30 2.50 2.40 2.07
  Maximum 16.90 14.90 16.45 12.70
Total n 598 517 481 232
  Median 10.12 8.75 8.30 4.40
  Minimum 1.9 1.85 1.7 1.30
  Maximum 43.8 41.45 35.8 30.3
  1. Median, minimum and maximum are expressed as B-Pb concentrations expressed in μg/dl units.