Table 1.

Epidemiological features and periodontal indexes of HIV-seropositive subjects with chronic periodontitis and control subjects with chronic periodontitis.

	Presumably HIV-seronegative control subjects with chronic periodontitis	HIV-seropositive subjects with chronic periodontitis
Females	14	20
Males	16	10
Smokers	5	3
Mean periodontal probing depths	3.196 mm	3.205 mm
STDEV*	0.58	0.32
Mean gingival recession	1.53 mm	1.66 mm
STDEV*	0.89	0.71
Number of gingival recession sites	195	202
STDEV*	5.11	5.46
Mean plaque index	75.2%	75.6%
STDEV*	23.6	20.16
Mean bleeding index	50.3%	47.3%
STDEV*	19.4	23.25

*STDEV: standard deviation.