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Table 1 Characteristics of participants according to snoring status

From: The relationship between snoring and left ventricular hypertrophy of China: a cross-sectional study

Variables Non-snorers Snorers P-value
Mean ± SD    
Age (year) 53.3 ± 10.9 54.5 ± 9.9 <0.001
Male gender (%) 2475 (42.2) 2216 (51.8) <0.001
Race (Han) (%) 5572 (95.0) 4067 (95.1) 0.793
Educational status (%)    0.065
 Primary school or below 2882 (49.1) 2182 (51.0)  
 Middle school 2448 (41.7) 1686 (39.4)  
 High school or above 534 (9.1) 407 (9.5)  
Physical activity (%)    0.102
 Light 1699 (29.0) 1261 (29.5)  
 Moderate 3852 (65.7) 2747 (64.3)  
 Severe 313 (5.3) 267 (6.2)  
Annual income (CNY/year)    0.662
  ≤ 5000 732 (12.5) 520 (12.2)  
 5000–20000 3161 (53.9) 2343 (54.8)  
  > 20000 1971 (33.6) 1412 (33.0)  
Current smoking status (%) 1916 (32.7) 1672 (39.1) <0.001
Current drinking status (%) 1155 (19.7) 1139 (26.6) <0.001
Sleep duration (h/d) 7.2 ± 1.7 7.3 ± 1.7 0.069
Systolic blood pressure (mmHg) 138.9 ± 22.8 145.0 ± 23.3 <0.001
Diastolic blood pressure (mmHg) 80.6 ± 11.2 83.8 ± 12.0 <0.001
Height (cm) 160.5 ± 8.0 161.4 ± 8.3 <0.001
Body mass index (kg/m2) 24.1 ± 3.4 25.7 ± 3.8 <0.001
Waist circumference (cm) 80.3 ± 9.3 85.2 ± 9.9 <0.001
Low-density lipoprotein cholesterol (mmol/L) 2.9 ± 0.8 3.0 ± 0.8 <0.001
High-density lipoprotein cholesterol (mmol/L) 1.4 ± 0.4 1.4 ± 0.4 <0.001
Triglyceride (mmol/L) 1.5 ± 1.4 1.8 ± 1.6 <0.001
Total cholesterol (mmol/L) 5.2 ± 1.1 5.3 ± 1.1 <0.001
Fasting plasma glucose (mmol/L) 5.8 ± 1.5 6.0 ± 1.7 <0.001
Diabetes (%) 503 (8.6) 533 (12.5) <0.001
Hypertension (%) 2648 (45.2) 2482 (58.1) <0.001