Table 1 Participant characteristics in the NHANES 2009–2012
From: Mean platelet volume is associated with periodontitis: a cross-sectional study
Characteristics | Total (N = 6809) | No/Mild (N = 3504) | Moderate/Severe (N = 3305) | P-value |
|---|---|---|---|---|
Age(years) | 52.03 ± 14.26 | 47.48 ± 13.35 | 56.85 ± 13.61 | < 0.001 |
Gender |  |  |  | < 0.001 |
Male | 3389 (49.77%) | 1436 (40.98%) | 1953 (59.09%) | Â |
Female | 3420 (50.23%) | 2068 (59.02%) | 1352 (40.91%) | Â |
Marital status |  |  |  | < 0.001 |
Married/Living with a partner | 4398 (64.59%) | 2356 (67.24%) | 2042 (61.79%) | Â |
Widowed/divorced/separated | 1629 (23.92%) | 699 (19.95%) | 930 (28.14%) | Â |
Never married | 777 (11.41%) | 448 (12.79%) | 329 (9.95%) | Â |
Missing | 5 (0.07%) | 1 (0.03%) | 4 (0.12%) | Â |
Race |  |  |  | < 0.001 |
Mexican American | 1006 (14.77%) | 427 (12.19%) | 579 (17.52%) | Â |
Non-Hispanic White | 2957 (43.43%) | 1752 (50.00%) | 1205 (36.46%) | Â |
Non-Hispanic Black | 1407 (20.66%) | 594 (16.95%) | 813 (24.60%) | Â |
Other | 1439 (21.13%) | 731 (20.86%) | 708 (21.42%) | Â |
Education level |  |  |  | < 0.001 |
High and above | 5103 (74.94%) | 2909 (83.02%) | 2194 (66.38%) | Â |
Below high school | 1695 (24.89%) | 591 (16.87%) | 1104 (33.40%) | Â |
Missing | 11 (0.16%) | 4 (0.11%) | 7 (0.21%) | Â |
PIR |  |  |  | < 0.001 |
Middle income | 2239 (32.88%) | 1098 (31.34%) | 1141 (34.52%) | Â |
Low income | 1869 (27.45%) | 759 (21.66%) | 1110 (33.59%) | Â |
High income | 2117 (31.09%) | 1382 (39.44%) | 735 (22.24%) | Â |
Missing | 584 (8.58%) | 265 (7.56%) | 319 (9.65%) | Â |
BMI | Â | Â | Â | 0.866 |
Not overweight | 1807 (26.54%) | 933 (26.63%) | 874 (26.44%) | Â |
Overweight | 2363 (34.70%) | 1211 (34.56%) | 1152 (34.86%) | Â |
Obesity | 2595 (38.11%) | 1340 (38.24%) | 1255 (37.97%) | Â |
Missing | 44 (0.65%) | 20 (0.57%) | 24 (0.73%) | Â |
Smoking habit |  |  |  | < 0.001 |
Never | 3804 (55.87%) | 2243 (64.01%) | 1561 (47.23%) | Â |
Previous | 1708 (25.08%) | 786 (22.43%) | 922 (27.90%) | Â |
Current | 1294 (19.00%) | 475 (13.56%) | 819 (24.78%) | Â |
Missing | 3 (0.04%) | 0 (0.00%) | 3 (0.09%) | Â |
Drinking habit |  |  |  | < 0.001 |
Never | 832 (12.22%) | 375 (10.70%) | 457 (13.83%) | Â |
Moderate | 2018 (29.64%) | 1154 (32.93%) | 864 (26.14%) | Â |
Heavy | 2579 (37.88%) | 1328 (37.90%) | 1251 (37.85%) | Â |
Missing | 1380 (20.27%) | 647 (18.46%) | 733 (22.18%) | Â |
Hypertension |  |  |  | < 0.001 |
No | 3177 (46.66%) | 1916 (54.68%) | 1261 (38.15%) | Â |
Yes | 3497 (51.36%) | 1499 (42.78%) | 1998 (60.45%) | Â |
Missing | 135 (1.98%) | 89 (2.54%) | 46 (1.39%) | Â |
Diabetes |  |  |  | < 0.001 |
No | 5784 (84.95%) | 3136 (89.50%) | 2648 (80.12%) | Â |
Yes | 884 (12.98%) | 300 (8.56%) | 584 (17.67%) | Â |
Missing | 141 (2.07%) | 68 (1.94%) | 73 (2.21%) | Â |
CVD |  |  |  | < 0.001 |
No | 6227 (91.45%) | 3341 (95.35%) | 2886 (87.32%) | Â |
Yes | 573 (8.42%) | 162 (4.62%) | 411 (12.44%) | Â |
Missing | 9 (0.13%) | 1 (0.03%) | 8 (0.24%) | Â |
Hb(g/dL) | 14.01 ± 1.49 | 13.94 ± 1.46 | 14.07 ± 1.51 | < 0.001 |
Hct (p g) | 40.97 ± 4.23 | 40.70 ± 4.17 | 41.26 ± 4.28 | < 0.001 |
WBC (103/µ L) | 7.02 ± 2.48 | 6.88 ± 1.97 | 7.16 ± 2.91 | < 0.001 |
NEUT (103/µ L) | 4.17 ± 2.02 | 4.08 ± 1.56 | 4.27 ± 2.41 | < 0.001 |
LYMPH (103/µ L) | 2.09 ± 0.79 | 2.07 ± 0.67 | 2.10 ± 0.90 | 0.514 |
MCV (f L) | 89.69 ± 5.77 | 89.24 ± 5.55 | 90.17 ± 5.96 | < 0.001 |
MCH (p g) | 30.67 ± 2.34 | 30.59 ± 2.29 | 30.75 ± 2.40 | 0.003 |
MCHC(g/dL) | 34.17 ± 1.00 | 34.25 ± 1.00 | 34.09 ± 1.01 | < 0.001 |
RDW (%) | 12.99 ± 1.32 | 12.89 ± 1.28 | 13.10 ± 1.36 | < 0.001 |
TPC (103/µ L) | 239.00 ± 62.81 | 242.53 ± 60.78 | 235.25 ± 64.70 | < 0.001 |