Paired Samples T-Test of Control Area (Before vs. After) | ||||||||
| Variables | T | Degree of Freedom | Significance (Two-Tailed) | ||||
Average | Standard Deviation | Standard Error | 95% Confidence Interval | |||||
Lower Level | Upper Level | |||||||
Pigmentation (before-after) | 1.250 | 10.392 | 2.324 | −3.613 | 6.113 | 0.538 | 19 | 0.597 |
Pore reduction (before-after) | 4.900 | 66.587 | 14.889 | −26.264 | 36.064 | 0.329 | 19 | 0.746 |
Redness (before-after) | 20.600 | 58.008 | 12.971 | −6.548 | 47.748 | 1.588 | 19 | 0.129 |
Porphyrin level (before-after) | −11.400 | 61.376 | 13.724 | −40.125 | 17.325 | −0.831 | 19 | 0.416 |