From: Matrix metalloproteinase-8 levels in oral samples as a biomarker for periodontitis in the Chinese population: an observational study
Group
Sites
Mean
95% CI
Min
Max
Med
1
180
4.88
−3.78, 13.54
1.34
44.54
4.08
2
178
24.84
−14.11, 63.79
5.34
121.43
18.54
Total
358
13.44
−19.19, 46.07
6.32