Table 6. Comparison of the mean Melasma Area and Severity Index (in months) between the groups using independent sample t-test.
SD- Standard Deviation, N- Number of Participants.
Time Interval | Groups | N | Minimum | Maximum | Mean | SD | Mean diff | p-value |
Baseline | Group A | 30 | 3 | 28.2 | 14.77 | 6.36 | -2.57 | 0.096 |
Group B | 30 | 7.5 | 30 | 17.34 | 5.4 | |||
Four weeks | Group A | 30 | 2.4 | 23.7 | 11.65 | 5.52 | 2.17 | 0.073 |
Group B | 30 | 3.9 | 15.6 | 9.48 | 3.44 | |||
Eight weeks | Group A | 30 | 1.2 | 16.2 | 7.89 | 4.51 | 3.84 | 0.001 |