Table 3 Descriptive data (mean ± SD), median, and quartile range for the tested light-curing tips comparing old and new light-curing unit tips (Wilcoxon Two-Sample Test)
From: Effect of damage or contamination to the tips of 200 light-curing units
Variable |  | Old tip (n = 154) | New tips (n = 46) | p-value |
|---|---|---|---|---|
Contamination Score (n = 62) | Mean Standard Deviation Median Quartile Range | 0.87 1.85 0 1.00 | 1.30 2.19 0 2 | 0.091 |
Physical Damage Score (n = 35) | Mean Standard Deviation Median Quartile Range | 0.64 1.66 0 0 | 0.85 2.20 0 0 | 0.93 |
Power Reduction (%) | Mean Standard Deviation Median Quartile Range | 20.5 18.07 15.0 26.34 | 15.1 15.57 13.35 22.85 | 0.059 |
Radiant Emittance Reduction (%) | Mean Standard Deviation Median Quartile Range | 10.0 17.32 0 13.52 | 7.9 13.39 0 10.28 | 0.87 |