Table 2. Distribution of BOP, PI, PD, and CAL among individuals in the China population according to gender, age group, smoking and menopause.
| BOP n (%) | PI n (%) | PD (±s) mm | CAL (±s) mm | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| + | _ | P-value | 0 | 1 | 2 | 3 | P-value | P-value | P-value | ||||
| Gender | 0.000 | 0.000 | 0.021 | 0.013 | |||||||||
| Male | 4984 (65.4) | 2632 (34.6) | 632 (8.3) | 1534 (20.1) | 1997 (26.2) | 3453 (45.3) | 3.36±1.16 | 3.12±1.09 | |||||
| Female | 5576 (73.1) | 2056(26.9) | 1175 (15.4) | 1962 (25.7) | 2013 (26.4) | 2482 (32.5) | 3.75±1.79 | 3.89±1.15 | |||||
| Age group | 0.000 | 0.000 | 0.000 | 0.000 | |||||||||
| 40–45 | 2148 (53.9) | 1836 (46.1) | 532 (13.4) | 935 (23.5) | 1191 (29.9) | 1326 (33.3) | 2.15±0.67 | 1.97±0.79 | |||||
| 46–50 | 2536 (66.7) | 1264 (33.3) | 458 (12.7) | 923 (25.6) | 932 (25.9) | 1287 (35.8) | 2.98±1.03 | 2.32±1.25 | |||||
| 51–55 | 2792 (75.7) | 894 (24.3) | 421 (12.1) | 873 (25.0) | 969 (27.8) | 1223 (35.1) | 3.56±1.24 | 3.46±1.07 | |||||
| 56–59 | 3084 (81.6) | 694 (18.4) | 396 (10.5) | 765 (20.2) | 918 (24.3) | 1699 (45.0) | 4.95±1.56 | 4.02±1.53 | |||||
| Smoking | 0.000 | 0.000 | 0.000 | 0.000 | |||||||||
| Yes | 4221 (89.0) | 521 (11.0) | 297 (6.3) | 809 (17.1) | 1226 (25.9) | 2410 (50.8) | 4.78±1.23 | 4.25±1.36 | |||||
| No | 763 (26.5) | 2111 (73.5) | 335 (11.7) | 725 (25.2) | 771 (26.8) | 1043 (36.3) | 2.45±0.96 | 2.56±1.13 | |||||
| Menopause | 0.000 | 0.002 | 0.013 | 0.008 | |||||||||
| Yes | 4762 (87.3) | 691 (12.7) | 834 (15.4) | 1375 (25.4) | 1392 (25.8) | 1802 (33.4) | 4.13±1.37 | 3.57±1.27 | |||||
| No | 814 (37.4) | 1365 (62.6) | 341 (15.6) | 587 (26.9) | 621 (28.5) | 630 (28.9) | 1.76±1.52 | 2.05±0.97 | |||||
PD: pocket depth, CAL: clinical attachment level, BOP: bleeding on probing, PI: plaque index. (n = number of sites)