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.
基线及3个月复查时两组附着丧失结果的比较
Comparison of attachment loss results between two groups at baseline and 3 months
| Group | n | Baseline/mm, x±s | 3 months later/mm, x±s | Change/mm, x±s | P value |
| Test group | 21 | 4.40±1.44 | 4.04±1.16 | 0.36±1.20 | 0.38 |
| Control group | 20 | 4.95±1.76 | 4.45±1.39 | 0.50±1.43 | 0.32 |
| P value | 0.28 | 0.32 | 0.73 |
