Table 1: Subject demographics and mean sensitivity at baseline.

nHAP Silica Total P Value
Sex 0.5
Female 19 (76%) 22 (84.62%) 41 (80.39%)
Male 6 (24%) 4 (15.38%) 10 (19.61%)
Total 25 26 51
Age 0.02
Mean ± SD 41.4 ± 14.14 49.38 ± 10.62 45.47 ± 13
Ethnicity 0.65
Asian or Pacific Islander 1 (4%) 3 (11.54%) 4 (7.84%)
Black (not Hispanic) 4 (16%) 4 (15.38%) 8 (15.69%)
Hispanic 13 (52%) 14 (53.85%) 27 (52.94%)
Other 0 (0%) 1 (3.85%) 1 (1.96%)
White (not Hispanic) 7 (28%) 4 (15.38%) 11 (21.57%)
Total 25 26 51
Average sensitivity per subject at baseline*
(Mean ± SD)
Air VAS 50.32 ± 19.4 51.51 ± 19.12 50.93 ± 19 0.93
Cold VAS 60.47 ± 17.64 65.09 ± 21.53 62.83 ± 20 0.36
Air DPS 2.66 ± 0.63 3.04 ± 0.58 2.85 ± 1 0.05
Cold DPS 3.12 ± 0.5 3.32 ± 0.56 3.22 ± 1 0.11

*VAS score, 0 to 100; DPS score, 0 to 4.