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. Author manuscript; available in PMC: 2022 Sep 22.
Published in final edited form as: J Occup Environ Hyg. 2020 Apr 3;17(5):231–242. doi: 10.1080/15459624.2020.1735640

Table 1.

Summary of GM overall SWPFs measured by the handheld CPC vs. reference SMPS.

Handheld CPC vs. reference SMPS
[Conc.] levela SMPS GM overall SWPFb (±GSD) CPC GM overall SWPFb (±GSD) P-value % ΔGM_overall SWPFc
L 28.56 ± 1.07 23.16 ± 1.16 0.17 18.91
M 36.93 ± 1.35 29.48 ± 1.41 0.23 20.17
H 44.18 ± 1.75 31.02 ± 1.84 0.05 29.79
a

[Conc.] level: Concentrations: L (low, 8 × 103 particles/cm3), M (medium, 5 × 104 particles/cm ), and H (high, 1 × 105 particles/cm3);

b

GM overall SWPFs of the 8-subject SWPF data (each subject data = 1 respirator model × 3 replicates × 5 exercises);

c

% ΔGM_overall SWPF was calculated as: [(|reference SMPS GM_ overall SWPF - portable device GM_overall SWPF|/reference SMPS GM_overall SWPF) x 100].