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.
Comparison of pre- and post-operative WOMAC scores between the two groups (
)
两组手术前后WOMAC评分比较（
）
| 组别 Group |
例数 n |
术前 Preoperative |
末次随访 Last follow-up |
差值 Difference |
统计值 Statistic |
| A | 72 | 41.1±12.9 | 10.6±11.1 | −30.5±14.3 |
t=18.050 P<0.001 |
| B | 110 | 40.2±11.6 | 9.4±9.8 | −30.8±15.0 |
t=21.570 P<0.001 |
| 统计值 Statistic |
t=0.461 P=0.646 |
− |
t=0.153 P=0.878 |
