Table 2: Percent change in sensitivity from baseline.

Variable Time (Weeks) Silica (%) nHAP (%) Difference
Silica–nHAP (%)
CI P Value
Air VAS 2 –10.93 1.42 –12.35 [–27.66, 2.97] 0.1132
4 –24.48 –11.15 –13.33 [–30.88, 4.22] 0.1355
6 –37.51 –31.06 –6.45 [–18.47, 5.57] 0.2906
8 –50.67 –38.99 –11.68 [–26.17, 2.81] 0.1132
Cold VAS 2 –9.14 –1.86 –7.28 [–19.83, 5.28] 0.2539
4 –15.65 –9.26 –6.39 [–20.13, 7.36] 0.3597
6 –34.34 –23.26 –11.08 [–23.98, 1.81] 0.0913
8 –39.36 –34.90 –4.46 [–16.02, 7.11] 0.4472
Air DPS 2 –7.72 2.97 –10.69 [–18.44, –2.94] 0.0072*
4 –17.35 –5.97 –11.38 [–19.73, –3.04] 0.0079*
6 –20.93 –13.93 –6.50 [–13.74, 0.73] 0.0776
8 –28.54 –17.47 –11.07 [–20.18, –1.96] 0.0176*
Cold DPS 2 –7.72 2.97 –10.69 [–19.33, –2.04] 0.0158*
4 –11.19 –0.62 –10.57 [–19.30, –1.83] 0.0181*
6 –19.86 –10.0 –9.86 [–18.00, –1.72] 0.0179*
8 –25.57 –15.30 –10.27 [–18.13, –2.42] 0.0107*

CI = Confidence interval *P < .05