Table 3.

The number of JP2 clones in 88 subgingival plaque samples and the grouping in terms of the CAL

CAL	Mean ± SD of bacterial cell number	Pa
≤ 6 mm (n= 31)	3.79×105 ± 1.58×105	0.003
≥ 7 mm (n= 57)	1.92×107 ± 8.35×107

^a Mann–Whitney test.