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Table 1 Clinical characteristics of the study participants according to BMI categories

From: Association of body mass index and long-term mortality in patients from nationwide LIPIDOGRAM 2004–2015 cohort studies: no obesity paradox?

Variable

Underweight (n = 320a)

Normal weight (n = 10 987a)

Overweight (n = 19 134a)

Class 1 obesity (n = 11 117a)

Class 2 obesity (n = 3153a)

Class 3 obesity (n = 904a)

p valueb

Age

49 (15)

53 (13)

57 (11)

58 (11)

58 (10)

57 (11)

< 0.001

Females

259 (81%)

7915 (72%)

10,908 (57%)

6396 (58%)

2045 (65%)

627 (69%)

< 0.001

BMI (kg/m2)

17.5 (0.9)

22.8 (1.6)

27.4 (1.4)

32.0 (1.4)

36.9 (1.4)

42.9 (2.6)

< 0.001

Higher education

202 (63%)

7429 (68%)

11,054 (58%)

5520 (50%)

1448 (46%)

378 (42%)

< 0.001

Urban place of residence

193 (60%)

6497 (59%)

10,793 (56%)

5810 (52%)

1552 (49%)

421 (47%)

< 0.001

WC (cm)

75 (12)

80 (9)

92 (9)

101 (9)

110 (11)

120 (14)

< 0.001

Metabolic syndrome

27 (8.4%)

1382 (13%)

6803 (36%)

6205 (56%)

2135 (68%)

664 (73%)

< 0.001

Smoking

106 (33%)

2875 (26%)

3432 (18%)

1685 (15%)

419 (13%)

105 (12%)

< 0.001

Diabetes Mellitus

13 (4.1%)

509 (4.6%)

1970 (10%)

2028 (18%)

848 (27%)

324 (36%)

< 0.001

Hypertension

95 (30%)

3436 (31%)

9630 (50%)

7232 (65%)

2372 (75%)

744 (82%)

< 0.001

Myocardial infarction

11 (3.4%)

443 (4.0%)

1236 (6.5%)

779 (7.0%)

192 (6.1%)

46 (5.1%)

< 0.001

Dyslipidemia

185 (58%)

7563 (69%)

14,920 (78%)

8763 (79%)

2425 (77%)

676 (75%)

< 0.001

Fibrate

8 (2.5%)

235 (2.1%)

672 (3.5%)

491 (4.4%)

147 (4.7%)

42 (4.6%)

< 0.001

Statin

52 (16%)

2251 (20%)

5612 (29%)

3713 (33%)

1090 (35%)

319 (35%)

< 0.001

TC (mmol/l)

5.44 (1.18)

5.57 (1.14)

5.62 (1.15)

5.53 (1.18)

5.41 (1.11)

5.29 (1.12)

< 0.001

LDL-C (mmol/l)

3.13 (1.00)

3.30 (0.99)

3.40 (1.00)

3.34 (1.00)

3.26 (0.95)

3.18 (0.96)

< 0.001

Non-HDL-C (mmol/l)

3.65 (1.13)

3.85 (1.08)

4.09 (1.09)

4.10 (1.11)

4.03 (1.04)

3.94 (1.04)

< 0.001

HDL-C (mmol/l)

1.79 (0.45)

1.72 (0.42)

1.53 (0.39)

1.43 (0.35)

1.39 (0.34)

1.35 (0.33)

< 0.001

TG (mmol/l)

1.26 (0.63)

1.34 (0.85)

1.67 (0.86)

1.89 (1.14)

1.95 (1.03)

1.97 (1.02)

< 0.001

  1. BMI body mass index, WC waist circumference, TC total cholesterol, LDL-C low-density lipoprotein cholesterol, HDL-C high-density lipoprotein cholesterol, TG triglycerides, Non-HDL-C non-high-density lipoprotein cholesterol
  2. aMean (SD); n (%)
  3. bKruskal‒Wallis rank sum test; Pearson's Chi-squared test