Skip to main content
. 2020 Jun 12;20:170. doi: 10.1186/s12903-020-01157-9

Table 3.

Hypersensitivity evaluation by Schiff score and change of Schiff scores by evaluation stage and group (mean and standard deviation)

Evaluation stage Mean (SD)
test (n = 199) ctrl (n = 188) p
post-scaling (baseline) 1.64 ± 0.64 1.58 ± 0.63 0.457
post-polishing (0 week) 1.28 ± 0.85 1.21 ± 0.85 0.574
2 weeks 0.92 ± 0.71 1.04 ± 0.75 0.200
4 weeks 0.69 ± 0.71 0.97 ± 0.77 0.000***
6 weeks 0.66 ± 0.68 0.84 ± 0.78 0.047*
change of Schiff 0 0.36 ± 0.72 0.37 ± 0.64 0.973
change of Schiff 2 0.72 ± 0.81 0.54 ± 0.78 0.080
change of Schiff 4 0.94 ± 0.92 0.61 ± 0.83 0.000***
change of Schiff 6 0.97 ± 0.90 0.74 ± 0.80 0.027*

: statistically significantly different from baseline Schiff score by paired t test (p < 0.001)

*: statistically significantly different from control group by mixed linear model (p < 0.05);

***: statistically significantly different from control group by mixed linear model (p < 0.001)

HHS Vulnerability Disclosure