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Table 2 Descriptive and demographics of individuals over the age of 16 stratified by dental caries experience. Data were extracted from NHANES 2017–2018 cycle

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

  1. P values were determined using chi-square and t-test
  2. Income: Ratio of Family income to poverty
  3. Obesity: considered obese if the BMI was ≥ 30
  4. Average sleep duration: number of sleep hours/night on both weekend and weekdays
  5. Body Mass Index: body mass divided by the square of the body height and is expressed in units of kg/m² as a continuous variable