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Table 1 Baseline characteristics of the study participants grouped by stroke status

From: Association between dietary inflammatory index and Stroke in the US population: evidence from NHANES 1999–2018

Variables

Overall

(n = 44,019)

Non- Stroke

(n = 42,533)

Stroke

(n = 1486)

P value

Age, years

45.8 [45.5, 46.2]

45.5 [45.1, 45.8]

60.3 [59.4, 61.2]

< 0.001***

Sex-man, n (%)

49.3 [47.6, 51.0]

49.4 [48.9, 49.9]

45.3 [42.1, 48.4]

0.01*

Race, n (%)

   

< 0.001***

Non-Hispanic White

68.3 [64.2, 72.3]

68.3 [66.3, 70.3]

66.8 [63.1, 70.4]

 

Non-Hispanic Black

11.2 [10.2, 12.1]

11.0 [10.0, 12.1]

16.8 [14.5, 19.1]

 

Mexican American

8.2 [7.2, 9.2]

8.3 [7.2, 9.3]

5.3 [4.0, 6.6]

 

Other Hispanic

5.7 [4.8, 6.5]

5.7 [4.9, 6.6]

3.6 [2.4, 4.9]

 

Other

6.7 [6.1, 7.2]

6.6 [6.1, 7.2]

7.5 [5.5, 9.6]

 

Smoking, n (%)

22.3 [21.2, 23.3]

22.1 [21.3, 22.8]

29.6 [26.5, 32.7]

< 0.001***

Drinking, n (%)

83.4 [80.3, 86.5]

89.31 [88.5, 90.2]

84.3 [81.5, 87.1]

< 0.001***

Education level, n (%)

   

< 0.001***

Below high school

5.4 [5.0, 5.8]

5.3 [4.9, 5.7]

10.3 [8.3, 12.3]

 

High school

35.2 [33.5, 37.0]

35.0 [33.8, 36.1]

47.8 [44.5, 51.1]

 

Above high school

59.3 [56.9, 61.7]

59.8 [58.4, 61.1]

41.9 [38.4, 45.4]

 

SBP, mmHg

121.6 [121.3, 121.9]

121.4 [121.1, 121.7]

130.2 [128.7, 131.7]

< 0.001***

DBP, mmHg

71.7 [71.4, 71.9]

71.7 [71.4, 72.0]

71.0 [70.1, 71.9]

0.13

Diabetes, n (%)

12.3 [11.8, 12.9]

11.8 [11.3, 12.2]

35.7 [32.4, 38.9]

< 0.001***

FBG, mmol/L

95.2 [94.7, 95.7]

95.7 [95.2, 96.2]

77.4 [75.7, 79.0]

< 0.001***

HbA1c, %

4.7 [4.7, 4.7]

4.7 [4.7, 4.7]

4.6 [4.6, 4.6]

< 0.001***

eGFR, ml/min/1.73m2

7.3 [7.2, 7.3]

7.3 [7.2, 7.3]

7.5 [7.4, 7.7]

< 0.001***

TG, mmol/L

4.30 [4.27, 4.33]

4.29 [4.26, 4.32]

4.59 [4.48, 4.70]

< 0.001***

TC, mmol/L

0.56 [0.56, 0.56]

0.56 [0.56, 0.56]

0.59 [0.58, 0.61]

< 0.001***

LDL-C, mmol/L

2.15 [2.13, 2.16]

2.15 [2.14, 2.17]

2.07 [2.03, 2.12]

0.001**

HDL-C, mmol/L

254.9 [253.5, 256.2]

255.0 [253.7, 256.4]

248.6 [242.4, 254.8]

0.04*

RBC, ×109/L

14.37 [14.33, 14.41]

14.38 [14.34, 14.42]

14.01 [13.89, 14.13]

< 0.001***

WBC, ×109/L

45.8 [45.5, 46.2]

45.4 [45.1, 45.8]

60.3 [59.4, 61.2]

< 0.001***

NE, ×109/L

49.3 [47.6, 51.0]

49.4 [48.9, 49.9]

45.3 [42.1, 48.4]

0.01*

Monocyte, ×109/L

0.56 [0.56, 0.56]

0.56 [0.56, 0.56]

0.59 [0.58, 0.61]

< 0.001***

LY, ×109/L

68.3 [64.2, 72.3]

68.3 [66.3, 70.3]

66.8 [63.1, 70.4]

0.001**

PLT, ×106/L

11.2 [10.2, 12.1]

11.0 [10.0, 12.1]

16.8 [14.5, 19.1]

0.04*

Hemoglobin, g/L

8.2 [7.2, 9.2]

8.3 [7.2, 9.3]

5.3 [4.00, 6.6]

< 0.001***

  1. Continuous variables are presented as weighted mean [95% CI], and categorical variables are presented as unweighted frequencies or percentages [95% CI]. CI, confidence interval; SBP, systolic blood pressure; DBP, diastolic blood pressure; FBG, fasting blood glucose; HbA1c, glycated hemoglobin; eGFR, estimated glomerular filtration rate; TG, triglyceride; TC, total cholesterol; LDL-C, low-density lipoprotein cholesterol; HDL-C, high-density lipoprotein cholesterol; RBC, red blood cell; WBC, white blood cell; NE, neutrophil; LY, lymphocyte; PLT, platelet. * P value < 0.05, ** P value < 0.01, *** P value < 0.001
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