From: Association between sleep duration and dental caries in a nationally representative U.S. population
Independent Variable | No Dental Caries Experience n/N (%) | Dental Caries Experience n/N (%) | P value | |
---|---|---|---|---|
 | 575/5205 (11.1) | 4630/5205 (88.9) |  | |
Sleep Duration | < 7 h | 87/1167 (7.5) | 1080/1167 (92.5) | P < 0.001 |
≥ 7 h | 488/4038 (12.1) | 3550/4038 (87.9) | ||
Age | 16–29 | 378/1297 (29.1) | 919/1297 (70.9) | P < 0.001 |
 | 30–34 | 74/405 (18.3) | 331/405 (81.7) | |
35–49 | 86/1104 (7.8) | 1018/1104 (92.2) | ||
50–64 | 33/1334 (2.5) | 1301/1334 (97.5) | ||
≥ 65 | 4/1061 (0.4) | 1061/1065 (99.6) | ||
Gender | Males | 297/2506 (11.8) | 2209/2506 (88.2) | P = 0.074 |
Females | 278/2699 (10.3) | 2421/2699 (89.7) | ||
Race/ethnicity | Non-Hispanic White | 167/1732 (9.6) | 1565/1732 (90.4) | P < 0.001 |
 | Non-Hispanic Black | 113/1202 (9.4) | 1089/1202 (90.6) | |
Hispanic | 128/1224 (10.4) | 1096/1224 (89.6) | ||
Non-Hispanic Asian | 129/770 (16.7) | 641/770 (83.3) | ||
Other race | 38/277 (13.7) | 239/277 (86.3) | ||
Education level | < High school | 59/856 (6.9) | 797/856 (93.1) | P = 0.28 |
High school graduate / GED | 81/1067 (7.6) | 986/1067 (92.4) | ||
Some college or more | 231/2723 (8.5) | 2492/2723 (91.5) | ||
Income (Income: Poverty) | < 1.38 | 151/1381 (10.9) | 1230/1381 (89.1) | P = 0.434 |
1.38–3.99 | 204/1952 (10.4) | 1748/1952 (89.6) | ||
> 3.99 | 220/1872 (11.7) | 1652/1872 (88.3) | ||
Obesity by BMI | Obese (BMI < 30) | 391/3074 (12.7) | 2683/3074 (87.3) | P < 0.05 |
Obese (BMI ≥ 30) | 184/2131 (8.6) | 1947/2131 (91.4) | ||
Average sleep duration |  | Mean = 8.1 (SD = 1.2) | Mean = 27.7 (SD = 7.6) | P < 0.05 |
BMI |  | Mean = 7.8 (SD = 1.5) | Mean = 29.7 (SD = 7.4) | P < 0.05 |