Paired Samples T-Test of Treatment 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)

11.750

16.843

3.766

3.867

19.633

3.120

19

0.006

Pore reduction (before-after)

61.600

71.095

15.897

28.327

94.873

3.875

19

0.001

Redness (before-after)

6.700

43.701

9.772

−13.753

27.153

0.686

19

0.501

Porphyrin level (before-after)

37.450

112.273

25.105

−15.095

89.995

1.492

19

0.152