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. 2019 Apr 18;51(2):340–344. [Article in Chinese] doi: 10.19723/j.issn.1671-167X.2019.02.026

2.

3个治疗组各随访时间点VAS(mm)多重比较Post hoc分析

Post hoc analysis (ANOVA) for pair-wise comparisons among all groups during the study period

Comparison VAS 0 d VAS 1 d VAS 2 d VAS 7 d VAS 14 d VAS 30 d
Difference
of means		 P value Difference
of means		 P value Difference
of means		 P value Difference
of means		 P value Difference
of means		 P value Difference
of means		 P value
* P<0.05; VAS 0 d, VAS 1 d, VAS 2 d, VAS 7 d, VAS 14 d, VAS 30 d represent the mean VAS values at the moment of post-operation, 1 d after operation, 2 d after operation, 7 d after operation, 14 d after operation, 30 d after operation respectively; VAS, visual analog scale.
Potassium nitrate
group vs.stannous
fluoride group		 -7.96 0.007* -6.42 0.041* -4.80 0.054 0.55 0.744 0.90 0.609 -0.18 0.919
Potassium nitrate
group vs.placebo
group		 -13.31 <0.001* -8.18 0.010* -0.82 0.742 0.24 0.886 0.18 0.918 -1.21 0.497
Stannous fluoride
group vs.placebo
group		 -5.35 0.070 -1.77 0.577 3.99 0.115 -0.31 0.857 -0.72 0.688 -1.03 0.567