Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Goodman Baron’s quantitative acne scar grading (ANOVA-F and paired t-test)
| Visits | Mean value | Standard deviation |
|---|---|---|
| First | 28 | 3.3 |
| Second | 23.7 | 2.8 |
| Third | 19.7 | 3.2 |
| Fourth | 16.7 | 3.3 |
| Fifth | 13.7 | 2.9 |
| Sixth | 10.9 | 2.9 |
| Seventh | 8.2 | 3.3 |
| ANOVA | F value = 462.55 | P value < 0.0001 |
| Paired t-test | F value = 22.86 | P value < 0.001 |
