Table 5. A summary of the hazard ratios for persistent bacterial presence between the visits .

	Hazard ratio (95% CI, P-value)
Variable	Uni-variate model	Multivariate model
Improvement in DASS-28	1.15 (0.89 to 1.49, 0.28)	1.42 (1.07 to 1.89, 0.01)
Pocket depth	0.62 (0.51 to 0.76, <0.01)	0.61 (0.50 to 0.74, <0.01)
Gingival score	1.78 (1.07 to 2.96, 0.03)	1.92 (1.11 to 3.31, 0.02)
Plaque score	0.98 (0.70 to 1.38, 0.91)	0.74 (0.52 to 1.05, 0.09)
Intervention	1.00 (0.58 to 1.74, 0.99)	0.92 (0.54 to 1.56, 0.76)