Table 4.

Number and Percentage of Women With Baseline and Delivery Periodontal Health by Treatment Group

	Control Group		Treatment Group
Various Definitions of Periodontal Health	Baseline	Delivery	Baseline	Delivery
All periodontal pockets less than 4 mm	0/728 (0.0)	4/728 (0.5)	0/691 (0.0)	7/691 (1.0)
All periodontal pockets less than 5 mm	70/728 (9.6)	68/728 (9.3)	58/691 (8.4)	91/691 (13.2)
Bleeding on probing in 10% of sites or less	75/728 (10.3)	88/728 (12.2)	69/691 (10.0)	122/691 (17.7)
Periodontal pockets 3 mm or less and bleeding on probing 10% or less	0/728 (0.0)	2/728 (0.3)	0/691 (0.0)	5/691 (0.7)
No incidence or progression of pocket depth during pregnancy*	410/691 (59.3)		506/728 (69.5)

Data are number/total number (%).

^*A person with progression is defined as four or more sites with pockets increasing by at least 2 mm resulting in a pocket depth of at least 4 mm.