The article "Chronic Beryllium Disease and Sensitization at a Beryllium Processing Facility" (K. Rosenman, V. Hertzberg, et al., Environmental Health Perspectives, 2005:1366–1372) discusses the effects of exposure to beryllium in a cohort of workers. Workers were categorized by their duration of exposure (in years) and by their disease status (chronic beryllium disease, sensitization to beryllium, or no disease). The results were as follows: Duration of Exposure 1 to < 5 <1 25 Diseased 10 23 Sensitized 19 11 Normal 70 136 206 Can you conclude that the proportions of workers in the various disease categories differ among exposure levels?

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The article "Chronic Beryllium Disease and Sensitization at a Beryllium Processing
Facility" (K. Rosenman, V. Hertzberg, et al., Environmental Health Perspectives,
2005:1366–1372) discusses the effects of exposure to beryllium in a cohort of workers.
Workers were categorized by their duration of exposure (in years) and by their disease
status (chronic beryllium disease, sensitization to beryllium, or no disease). The
results were as follows:
Duration of Exposure
1 to < 5
<1
25
Diseased
10
23
Sensitized
19
11
Normal
70
136
206
Can you conclude that the proportions of workers in the various disease categories differ
among exposure levels?
Transcribed Image Text:The article "Chronic Beryllium Disease and Sensitization at a Beryllium Processing Facility" (K. Rosenman, V. Hertzberg, et al., Environmental Health Perspectives, 2005:1366–1372) discusses the effects of exposure to beryllium in a cohort of workers. Workers were categorized by their duration of exposure (in years) and by their disease status (chronic beryllium disease, sensitization to beryllium, or no disease). The results were as follows: Duration of Exposure 1 to < 5 <1 25 Diseased 10 23 Sensitized 19 11 Normal 70 136 206 Can you conclude that the proportions of workers in the various disease categories differ among exposure levels?
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