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Table 7 Frequencies and cumulative frequencies of child blood As levels at Time II testing by community (N = 204)

From: A comparison of arsenic exposure in young children and home water arsenic in two rural West Texas communities

  Community 1 Community 2
As intervals (μg/dL) Freq Freq
%
Cumul Freq Cumul
Freq
%
Freq Freq
%
Cumul Freq Cumul
Freq
%
2.800–2.999 0 0.0 0 0.0 0 0.0 0 0.0
2.600–2.799 0 0.0 87 100.0 0 0.0 117 100.0
2.400–2.599 0 0.0 87 100.0 0 0.0 117 100.0
2.200–2.399 0 0.0 87 100.0 0 0.0 117 100.0
2.000–2.199 0 0.0 87 100.0 1 0.9 117 100.0
1.800–1.999 0 0.0 87 100.0 0 0.0 116 99.1
1.600–1.799 0 0.0 87 100.0 0 0.0 116 99.1
1.400–1.599 0 0.0 87 100.0 0 0.0 116 99.1
1.200–1.399a 1 1.1 87 100.0 0 0.0 116 99.1
1.000–1.199 0 0.0 86 98.9 4 3.4 116 99.1
0.800–0.999 1 1.1 86 98.9 10 8.5 112 95.7
0.600–0.799 3 3.4 85 97.7 11 9.4 102 87.2
0.400–0.599 24 27.6 82 94.3 42 35.9 91 77.8
0.200–0.399 46 52.9 58 66.7 35 29.9 49 41.9
0.000–0.199 12 13.8 12 13.8 14 12.0 14 12.0
Total 87 0.0 87 100.0 117 100 117 100.0
  1. a 1.2 μg/dL allowable limit of As blood levels in children set by the CDC