Skip to main content

Table 2 Adjusted odds ratios (ORs) for overweight and central obesity by urinary sodium excretion levels among adults and adolescents, the Korea National Health Examination and Nutritional Survey (KNHANES) Phase IV-V, 2008-2011

From: Associations of urinary sodium levels with overweight and central obesity in a population with a sodium intake

  Overweight classified by BMI c Central obesity classified by waistd
Urinary sodium excretion levelsa(mg/day) Normal weightc Overweightc Normal waist4 Central obesityd  
N (%) N (%) OR (95% CI)2 P e N (%) N (%) OR (95% CI)b P e
Adults [N = 7224] [N = 9026]    [N = 10,307] [N = 5943]   
  < 2200 783 (10.8) 533 (5.9) 1.00   1017 (9.9) 299 (5.0) 1.00  
 2200-3199 3120 (43.2) 3141 (34.8) 1.48 (1.29-1.69) 0.03 4415 (42.8) 1846 (31.1) 1.48 (1.26-1.74) 0.02
  ≥ 3200 3321 (46.0) 5352 (59.3) 2.17 (1.90-2.49) < 0.01 4875 (47.3) 3798 (63.9) 2.50 (2.13-2.94) < 0.01
Adolescents [N = 1153] [N = 323]    [N = 1311] [N = 165]   
  < 2200 283 (24.5) 25 (7.7) 1.00   299 (22.8) 9 (5.4) 1.00  
 2200-3199 621 (53.9) 113 (35.0) 1.47 (0.82-2.65) 0.89 676 (51.6) 58 (35.1) 1.09 (0.49-2.44) 0.67
  ≥ 3200 249 (21.6) 185 (57.3) 5.80 (3.17-10.60) < 0.01 336 (25.6) 98 (59.4) 4.19 (1.78-9.89) < 0.01
  1. a24h-urinary sodium excretion levels estimated by Tanaka equation
  2. bAdjusted for age and sex, energy intake (per day), water intake (per day), potassium intake (per day), and physical activity
  3. cBody mass index (BMI) in adults and adolescents were classified to two groups using the steering Committee of the Regional Office for the Western Pacific Region of WHO, the International Association for the Study of Obesity and the International Obesity Task Force proposed the appropriateness of the classification of obesity in Asia in 2000 [19]. Normal weight (< 23.0 kg/m2), and overweight (≥ 23.0 kg/m2)
  4. dWaist circumference (WC) in adults were classified two groups using the criterion of NECP ATP- III guideline [21], such as normal waist (male: < 90 cm, female: < 80 cm), central obesity (male: ≥ 90 cm, female: ≥ 80 cm); WC in adolescents was classified two groups using the criterion of International Diabetes Federation (IDF) [22]
  5. eP-value