Table 3.

Overall fit factor scores of 10 participants per group for N95 respirator, ASTM^∗ level 3, and ASTM level 2 medical face masks.

N95 RESPIRATOR, MEAN (SD†)	L-3‡ MFM§, MEAN (SD)	L-3 MFM +AND 3D¶ FRAME, MEAN (SD)	D1: L-3 MFM +AND 3D FRAME – L-3 MFM, MEAN (95% CI)	L-2∗∗ MFM, MEAN (SD)	L-2 MFM +AND 3D FRAME, MEAN (SD)	D2: L-2 MFM +AND 3D FRAME – L-2 MFM, MEAN (95% CI)
177 (39.5)	3 (1.5)	145 (53.1)	142 (106.71 to 177.29)	7 (3.3)	109 (31.8)	102 (80.76 to 123.24)

^∗ASTM: American Society for Testing and Materials.

^†SD: Standard deviation.

^‡L-3: Level 3.

^§MFM: Medical face mask.

^¶3D: 3-dimensional printed.

^∗∗L-2: Level 2.