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. Author manuscript; available in PMC: 2019 Sep 3.
Published in final edited form as: J Occup Environ Hyg. 2019 May 20;16(7):489–497. doi: 10.1080/15459624.2019.1609006

Figure 1.

Figure 1.

National Institute for Occupational Safety and Health (NIOSH) bivariate panel, based on face length and face width. The cells are numbered 1–10 and the numbers in parentheses indicate the number of subjects sampled from each cell. When the subject’s face length or face width fall on the boundaries, the subject is classified into the higher number cell with greater face dimensions.