Table 2.

Demographic, genotype distribution and treatment outcome of halitosis patients in the prospective study (n = 60)

Characteristics		Genotypes
		Non-AVI/AVI (n = 40)	AVI/AVI (n = 20)	P value
Demographic	Age, mean ± SD, y	33.83 ± 6.64	35.90 ± 7.01	0.2757 a
	Male sex, n (%)	16 (40.0%)	9 (45.0%)	0.7111 b
PPD (mm)	Baseline	2.41 ± 0.47	2.57 ± 0.74	0.3076 a
	1-month	1.84 ± 0.38	2.01 ± 0.50	0.2349 a
	3-month	1.88 ± 0.39	1.87 ± 0.46	0.9360a
	6-month	2.00 ± 0.52	2.09 ± 0.46	0.5520 a
Treatment outcome	Improved	27	2	0.0009 b
	Persistent	13	18

^aunpaired student’s t test

^bContinuity corrected chi-square test