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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: J Am Dent Assoc. 2013 May;144(5):517–526. doi: 10.14219/jada.archive.2013.0154

TABLE 3.

Differences in participants receiving 10 percent benzocaine, 20 percent benzocaine or vehicle gel.

TREATMENT PAIRWISE COMPARISONS
Observed Treatment
Differences,
% (95 Percent CI*)
P
Value
20 Percent Benzocaine
Versus Vehicle
16.8 (7.2-25.7) < .001
10 Percent Benzocaine
Versus Vehicle
10.3 (0.3-19.3) .038
20 Percent Benzocaine
Versus 10 Percent
Benzocaine
6.6 (0.2-13.3) .047
*

The 95 percent confidence interval (CI) was calculated on the basis of the Cochran-Mantel-Haenszel weighted percentages and corresponding standard errors.

P values are from the Cochran-Mantel-Haenszel test, controlling for site and baseline dental pain scale score.

The first treatment was significantly better than was the second treatment at the .05 level.