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Table 1 Baseline characteristics by BMI groups

From: Association of body mass index and waist-to-height ratio with outcomes in ischemic stroke: results from the Third China National Stroke Registry

Characteristics

BMI groups, kg/m2

P-value

P for linear trend

 < 18.5

18.5- < 23

23- < 27.5

 ≥ 27.5

N, %

309, 2.18%

3855, 27.25%

7491, 52.95%

2491, 17.61%

  

Age (year), median (IQR)

72 (61–78)

65 (57–73)

62 (54–69)

60 (52–67)

 < 0.0001

 < 0.0001

Male, N (%)

177 (57.28%)

2599 (67.42%)

5303 (70.79%)

1641 (65.88%)

 < 0.0001

0.2082

Ethnicity(Han), N (%)

299 (96.76%)

3776 (97.95%)

7268 (97.02%)

2387 (95.82%)

 < 0.0001

 < 0.0001

Stroke history, N (%)

80 (25.89%)

806 (20.91%)

1663 (22.20%)

585 (23.48%)

0.0361

0.1016

Medical comorbidities, N ( %)

 Diabetes mellitus

41 (13.27%)

760 (19.71%)

1829 (24.42%)

680 (27.30%)

 < 0.0001

 < 0.0001

 Atrial fibrillation

42 (13.59%)

303 (7.86%)

489 (6.53%)

152 (6.10%)

 < 0.0001

 < 0.0001

 Myocardial infarction

10 (3.24%)

69 (1.79%)

144 (1.92%)

55 (2.21%)

0.2572

0.6764

 Hypertension

159 (51.46%)

2085 (54.09%)

4835 (64.54%)

1808 (72.58%)

 < 0.0001

 < 0.0001

 Lipid metabolism disorders

16 (5.18%)

226 (5.86%)

572 (7.64%)

261 (10.48%)

 < 0.0001

 < 0.0001

Heavy drinkinga, N ( %)

38 (12.30%)

552 (14.32%)

1075 (14.35%)

345 (13.85%)

0.7171

0.9632

Current smoker, N ( %)

99 (32.04%)

1210 (31.39%)

2411 (32.19%)

783 (31.43%)

0.8085

0.8819

Waist circumference (cm), median (IQR)b

72 (69–79)

80 (75–86)

87 (80–94)

96.5 (88–105)

0.0001

 < 0.0001

TOAST subtypes, N (%)

 Large-artery atherosclerosis

78 (25.24%)

992 (25.73%)

1936 (25.84%)

661 (26.54%)

0.0016

 

 Small-vessel occlusion

52 (16.83%)

790 (20.49%)

1723 (23.00%)

572 (22.96%)

  

 Cardioembolism

28 (9.06%)

282 (7.32%)

442 (5.90%)

129 (5.18%)

  

 Stroke of other determined etiology

5 (1.62%)

50 (1.30%)

86 (1.15%)

30 (1.20%)

  

 Stroke of undetermined etiology

146 (47.25%)

1741 (45.16%)

3304 (44.11%)

1099 (44.12%)

  

NIHSS at admission, median (IQR)

5 (2–9)

4 (2–6)

3 (2–6)

3 (2–6)

 < 0.0001

 < 0.0001

Intravenous thrombolysis, N (%)

55 (17.80%)

465 (12.06%)

751 (10.03%)

249 (10.00%)

 < 0.0001

 < 0.0001

Arterial thrombolysis or mechanical thrombectomy, N (%)

3 (0.97%)

25 (0.65%)

32 (0.43%)

11 (0.44%)

0.2573

0.096

  1. Kruskal–Wallis test was used to compare group differences for continuous variables, and χ2 test was used for categorical variables. P for linear trend was calculated by Kendall's Tau-b correlation analysis for continuous variables or Cochran-Armitage test for categorical variables. aHeavy drinking was defined as alcohol consumption ≥ 2 standard alcohol consumption /day. bWaist circumference was available for 4805 patients. BMI, body mass index; TOAST, Trial of Org 10,172 in Acute Stroke Treatment; NIHSS, National Institutes of Health Stroke Scale
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BMC Neurology

ISSN: 1471-2377

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