Table 3.

Linear regression model for changes in GBI as a dependent variable (n=118)

Effect	Regression	95% CI	P-value
Age	−0.1	−0.7, 0.6	0.820
Female	3.2	−16.2, 9.8	0.628
Diseases	−0.5	−3.1, 2.0	0.672
Medication	−0.2	−1.9, 1.5	0.845
Dementia	3.4	−8.5, 15.3	0.572
Care dependency	0.1	−0.1, 0.3	0.166
Intervention	−8.2	−19.8, 3.5	0.169
Rural	−7.4	−19.0, 4.2	0.208
Baseline GBI	−0.7	−0.9, −0.5	0.001

Notes: Negative values are indicative for improvements. R²=0.367. Data in bold indicates statistical significance.

Abbreviation: GBI, Gingival Bleeding Index.