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Table 1 Descriptive baseline characteristics of participants

From: Relationship between diet quality scores and the risk of frailty and mortality in adults across a wide age spectrum

Characteristics, mean ± SD or N (%)

All participants

8-year mortality

Alive

N = 14,078

Deceased

N = 1171

Age (year)

47.2 ± 16.7

46.1 ± 16.1

67.1 ± 14.7

Sex, female

7769 (51.7)

7289 (52.1)

480 (44.9)

Race

 Non-Hispanic white

6949 (69.2)

6263 (68.9)

686 (9.3)

 Non-Hispanic black

3142 (10.8)

2907 (10.7)

235 (75.2)

 Hispanic

3964 (13.6)

3763 (13.8)

201 (11.3)

 Other

1194 (6.4)

1145 (6.5)

49 (4.2)

Education

 Less than high school

4170 (18.2)

3702 (17.4)

468 (32.4)

 High school

3480 (22.6)

3189 (22.4)

291 (26.9)

 Some college/ associate education

4291 (30.7)

4031 (31.0)

260 (25.8)

 College graduate or more

3291 (28.5)

3143 (29.2)

148 (15.0)

Marital status

 Married

9020 (63.5)

8444 (64.2)

576 (50.7)

 Widowed

1276 (5.7)

946 (4.6)

330 (26.5)

 Divorced or separated

2179 (12.6)

2002 (12.5)

177 (14.5)

 Never married

2769 (18.1)

2681 (18.7)

88 (8.3)

Full-time working

8278 (63.0)

8069 (65.3)

209 (22.7)

Smoking status

 Never

8253 (54.6)

7771 (55.3)

482 (42.1)

 Former

3739 (24.7)

3268 (23.9)

471 (38.7)

 Current

3252 (20.7)

3034 (20.8)

218 (19.2)

Body mass index (kg/m2)

 < 18.5

251 (1.7)

221 (1.6)

30 (2.9)

 18.5–24.9

4174 (29.5)

3864 (29.6)

310 (27.8)

 25.0–29.9

5071 (33.9)

4668 (33.8)

403 (34.7)

 ≥ 30

5595 (34.9)

5224 (35.0)

371 (34.6)

Energy intake (Kcal)

2182.3 ± 999.1

2199.1 ± 1000.6

1882.7 ± 920.8

NI score (0 to 1)

0.34 ± 0.15

0.33 ± 0.15

0.41 ± 0.16

E-DII score (− 5.81 to 4.82)

0.35 ± 1.97

0.37 ± 1.97

0.15 ± 1.92

HEI-2015 score (0 to 100)

51.2 ± 13.6

51.1 ± 13.6

51.8 ± 13.1

MDS (0 to 10)

4.0 ± 1.6

4.0 ± 1.6

4.0 ± 1.5

DASH score (0 to 9)

2.5 ± 1.6

2.5 ± 1.5

2.5 ± 1.6

FI score (0 to 1)

0.10 ± 0.10

0.09 ± 0.09

0.24 ± 0.15

  1. DASH Dietary Approaches to Stop Hypertension, E-DII Energy-density Dietary Inflammatory Index, FI Frailty index, HEI-2015 Healthy Eating Index-2015, Kcal kilocalories, kg kilogram, m meter, MDS Mediterranean Diet Score, NI Nutrition Index. Higher NI and E-DII scores and lower HEI-2015, MDS, and DASH scores represent worse dietary pattern/intake. The percentages and mean values are weighted with sampling weights