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Table 1 Clinical characteristics of subjects by presence or absence of knee OA ( n =2234)

From: Correlation between metabolic syndrome and knee osteoarthritis: data from the Korean National Health and Nutrition Examination Survey (KNHANES)

  All Men Women
  No (n = 1964) Yes (n = 270) No (n = 979) Yes (n = 41) No (n = 985) Yes (n = 229)
Age (y) 53.2 ± 11.0‡ 64.5 ± 10.1 53.8 ± 10.8‡ 65.3 ± 10.5 52.6 ± 11.3‡ 64.3 ± 10.0
Weight (kg) 62.0 ± 10.1‡ 58.3 ± 9.5 66.6 ± 9.6§ 63.9 ± 10.8 57.5 ± 8.5 57.3 ± 8.9
Height (cm) 161.2 ± 8.7‡ 153.9 ± 7.6 167.4 ± 6.0* 165.2 ± 5.8 155.0 ± 6.1‡ 151.8 ± 6.0
BMI (kg/m2) 23.8 ± 3.1‡ 24.6 ± 3.3 23.7 ± 2.9 23.4 ± 3.6 23.9 ± 3.2‡ 24.8 ± 3.2
WC (cm) 82.7 ± 8.7‡ 85.0 ± 9.5 85.3 ± 7.9 85.9 ± 9.9 80.1 ± 8.7‡ 84.8 ± 9.4
SBP (mmHg) 126.4 ± 20.2‡ 133.2 ± 20.9 128.7 ± 19.3 132.8 ± 20.5 124.0 ±20.7‡ 133.3 ± 21.0
DBP (mmHg) 79.5 ± 11.5 79.4 ± 12.0 81.7 ± 11.5* 77.0 ± 11.8 77.4 ± 11.2† 79.8 ± 12.1
Fasting glucose (mg/dL) 99.2 ± 18.2 99.9 ± 17.9 100.2 ± 18.6 99.5 ± 17.0 98.3 ± 17.7 100.0 ± 18.1
HDL - C (mg/dL) 45.5 ± 10.3 45.0 ± 10.2 163.4 ± 84.4 153.9 ± 80.5 47.5 ± 10.2† 45.5 ± 9.8
TG (mg/dL) 148.2 ± 79.7 149.7 ± 66.3 43.5 ± 10.0 42.6 ± 12.4 133.2 ± 71. 6† 149.0 ± 63.7
Exercise 594 (30.2)† 58 (21.6) 340 (34.7) 13 (31.7) 254 (25.8)§ 45 (19.7)
Alcohol intake 1305 (66.4)‡ 134 (49.6) 816 (83.4) 35 (85.4) 489 (49.6)§ 99 (43.2)
Smoking       
Never 1131 (57.6)‡ 209 (77.4) 210 (21.5)* 5 (12.2) 921 (93.5)§ 204 (89.1)
Current 590 (30.0) 40 (14.8) 535 (54.6) 19 (46.3) 55 (5.6) 21 (9.2)
Ex-smoker 243 (12.4) 21 (7.8) 234 (23.9) 17 (41.5) 9 (0.9) 4 (1.7)
  1. Abbreviations: OA osteoarthritis, BMI body mass index, WC waist circumference, SBP systolic blood pressure, DBP diastolic blood pressure, HDL - C high density lipoprotein cholesterol; TG triglyceride.
  2. Values are presented with mean ± standard deviations or number (%).
  3. P-values: Student’s t test & Chi-square test or Fisher’ exact test; .050 < § P < .1, * P < .050, P < .010, P < .001.