Skip to main content

Table 2 Characteristics of participants stratified by chronic disease status. NHANES 1999–2018

From: Relationship between dietary inflammatory index and chronic diseases in older U.S. Adults: NHANES 1999–2018

Variable

Overall

Chronic diseases

p-value

No

Yes

Age

70.09 ± 0.10

67.20 ± 0.17

70.67 ± 0.10

< 0.0001

PIR

2.97 ± 0.04

3.31 ± 0.06

2.90 ± 0.03

< 0.0001

BMI

28.95 ± 0.08

27.11 ± 0.14

29.33 ± 0.09

< 0.0001

Height

165.94 ± 0.12

166.57 ± 0.25

165.81 ± 0.13

0.004

Weight

80.00 ± 0.24

75.50 ± 0.49

80.93 ± 0.26

< 0.0001

Waist Circumference

102.03 ± 0.20

96.80 ± 0.42

103.13 ± 0.21

< 0.0001

WBC

7.12 ± 0.03

6.60 ± 0.06

7.23 ± 0.03

< 0.0001

Neutrophil%

59.47 ± 0.10

58.18 ± 0.24

59.74 ± 0.11

< 0.0001

Neutrophils

4.26 ± 0.02

3.89 ± 0.05

4.33 ± 0.02

< 0.0001

CRP

0.49 ± 0.01

0.42 ± 0.03

0.51 ± 0.01

0.005

DII

1.48 ± 0.03

1.21 ± 0.06

1.54 ± 0.03

< 0.0001

Sex

   

0.29

Female

8311(50.33)

1229(56.49)

7082(54.92)

 

Male

8201(49.67)

1232(43.51)

6969(45.08)

 

Ethnicity

   

< 0.0001

Mexican American

2440(14.78)

426(3.72)

2014(3.79)

 

Non-Hispanic Black

3259(19.74)

348(5.23)

2911(9.17)

 

Non-Hispanic White

8617(52.19)

1284(82.80)

7333(78.79)

 

Other Hispanic

1243(7.53)

230(3.75)

1013(3.49)

 

Other Race - Including Multi-Racial

953(5.77)

173(4.51)

780(4.76)

 

Citizenship

   

0.22

Citizen by birth or naturalization

15,340(93.01)

2224(96.68)

13,116(97.10)

 

Not a citizen of the US

1153(6.99)

234(3.32)

919(2.90)

 

Marital status

   

< 0.0001

Divorced or separated

2405(14.7)

379(14.41)

2026(12.42)

 

Married or living with partner

9513(58.15)

1560(69.60)

7953(61.89)

 

Single

756(4.62)

128(3.64)

628(3.55)

 

Widowed

3686(22.53)

372(12.35)

3314(22.14)

 

Annual family income

   

< 0.0001

<$65,000

12,691(80.79)

1767(65.31)

10,924(74.04)

 

>=$65,000

3017(19.21)

564(34.69)

2453(25.96)

 

Education

   

< 0.0001

College and above

6969(42.31)

1179(60.11)

5790(50.33)

 

Middle and high school

6397(38.83)

862(33.33)

5535(39.36)

 

Primary school and less

3107(18.86)

415(6.56)

2692(10.31)

 

Smoking status

   

< 0.0001

Never

7928(48.07)

1254(53.93)

6674(47.34)

 

Ever

6493(39.37)

845(33.68)

5648(41.52)

 

Current

2070(12.55)

356(12.39)

1714(11.14)

 

Drinking status

   

< 0.0001

Never

2767(18.15)

400(15.05)

2367(16.11)

 

Ever

4205(27.58)

464(15.86)

3741(25.06)

 

Current

8276(54.28)

1444(69.09)

6832(58.82)

 

DII quartile

   

< 0.0001

Q1

4128(25)

686(32.53)

3442(26.58)

 

Q2

4130(25.01)

657(25.74)

3473(25.67)

 

Q3

4126(24.99)

601(23.92)

3525(24.34)

 

Q4

4128(25)

517(17.82)

3611(23.41)

 
  1. Continuous variables presented as mean ± SD; categorical variables presented as count (%); PIR, poverty income ratio; BMI, body mass index; WBC, white blood cells; CRP, C-reactive protein; DII, dietary inflammatory index; AHI, annual household income;