BMC Public Health

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
1.200–1.399^a	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

^a 1.2 μg/dL allowable limit of As blood levels in children set by the CDC

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ISSN: 1471-2458

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