Statistical Analyses for Occupational Exposure Results

NIOSH released a guide, Occupational Exposure Sampling Strategy Manual (1977), that describes statistical analyses for occupational exposure results in a clear and concise manner. Included are discussions and examples on:

Confidence Limits (CL’s) CL’s and Compliance / Non-compliance Classifications Statistics and Classifications for: full period sampling, partial period sampling, consecutive sampling, grab sampling, comparison to […]


IHSTAT is a excel worksheet that enables statistical analyses of occupational hygiene measurement data and compliance testing (with occupational exposure limits). IHSTAT was developed by AIHA (American Industrial Hygiene Association).

Determines whether samples are normally distributed or log normally distributed. Where:

Normal distribution – data that clusters around a mean/average Log Normal distribution – […]