. 2021 Jun 20;48(9):1250–1259. doi: 10.1111/jcpe.13479

TABLE 1.

Background characteristics of the study population. Values are numbers (%) or means ± standard deviation

	Control	Periodontitis	p‐value^a
	(n = 20)	(n = 19)
Age	38.0 ± 13.6	50.5 ± 10.6	.003
Males	9 (45%)	11(57.9%)	.873
Caucasian	19 (95.0%)	12 (63.2%)	.014
Smokers	1 (5.0%)	7 (36.8%)	.014
BMI (kg/m²)^b	22.0 ± 3.2	27.1 ± 5.4	.001
Educational level (≥high school)	16 (80.0%)	11 (57.9%)	.135
Medication use^c (during the last year)	2 (10.0%)	4 (21.1%)	.339
Mean PPD^d (mm)		3.9 ± 0.5
Percentage of teeth with pockets ≥5 mm		64.0 ± 15.9
Percentage of sites with pockets ≥5 mm		30.8 ± 11.8
Percentage of teeth with ≥33% bone loss		23.6 ± 14.2
Percentage of teeth with ≥50% bone loss		18.5 ± 12.6
Mean BoP^e (%)		63.0 ± 26.6
Mean number of remaining teeth		28.4 ± 2.7

^{^a}

Independent t test for continuous variables, chi‐square test for categorical variables.

^{^b}

BMI: Body Mass Index.

^{^c}

Antihypertensive, antidiabetic and anti‐hypercholesterolemia medication, anticoagulant and antiplatelet medication, corticosteroids, antihistamines, painkillers and vitamins.

^{^d}

PPD: Probing pocket depth.

^{^e}

BoP: Bleeding on probing.