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Table 1 Baseline characteristics for Taiwanese adult workers not fulfilling metabolic syndrome (MetS) criteria initially

From: Worksite health screening programs for predicting the development of Metabolic Syndrome in middle-aged employees: a five-year follow-up study

   2002 baseline data, divided by MetS outcome in 2007**  
Variable* Overall N = 1384 Without MetS outcome With MetS outcome P
   n = 1209 n = 175  
Age (years) 32.3 ± 6.5 32.1 ± 6.5 33.3 ± 6.6 0.04
Body mass index (kg/m2) 23.0 ± 3.0 22.6 ± 2.9 25.8 ± 2.5 <0.01
Waist (cm) 75.6 ± 8.6 74.4 ± 8.2 83.3 ± 7.4 <0.01
Systolic blood pressure (mmHg) 117.0 ± 14.3 116.0 ± 14.1 124.2 ± 14.2 <0.01
Diastolic blood pressure(mmHg) 71.7 ± 9.2 71.0 ± 9.0 76.4 ± 9.0 <0.01
Fasting blood sugar (mg/dl) 94.3 ± 13.2 93.7 ± 12.0 97.8 ± 19 6 <0.01
Triglyceride (mg/dl) 102.5 ± 78.0 97.3 ± 77.3 137.9 ± 73.3 <0.01
HDL cholesterol (mg/dl) 50.5 ± 11.8 51.2 ± 11.7 46.0 ± 12.0 <0.01
Alanine aminotransferase (U/l) 27.2 ± 26.6 25.5 ± 25.8 38.5 ± 29.3 <0.01
γ-Glutamyl transferase (U/l) 33.4 ± 24.7 31.0 ± 22.2 49.7 ± 33.3 <0.01
Uric acid (mg/dl) 6.6 ± 1.6 6.5 ± 1.6 7.2 ± 1.5 <0.01
Insulin (μU/ml) 8.2 ± 5.7 7.8 ± 5.0 11.1 ± 8.9 <0.01
Adults having MetS component (count ≤ 2) 811 (58.6%) 657 (54.3%) 154 (88.0%) <0.01
Male gender 996 (72.0%) 855 (70.7%) 141(80.6%) <0.01
Ever been a smoker (≥ 6 cigarettes/day for ≥1 year) 361 (26.1%) 312 (25.8%) 49 (28.0%) 0.55
Regular alcohol consumption (≥ 1 day/week) 100 (7.2%) 77 (6.4%) 23 (13.1%) 0.01
Taking exercise ≥ 3 days/week) 444 (32.1%) 389 (32.2%) 55 (31.4%) 0.84
Having snacks before sleeping (≥ 3 days/week) 644 (46.5%) 568 (47.0%) 76 (43.4%) 0.38
Having snacks between meals (≥ 3 days/week) 546 (39.5%) 473 (39.1%) 73 (41.7%) 0.51
HBV carrier 256 (18.5%) 221 (18.3%) 35 (20.0%) 0.59
HCV carrier 16 (1.2%) 13 (1.1%) 3 (1.7%) 0.53
Sonographic fatty liver 349 (27.4%) 278 (23.0%) 101 (57.7%) <0.01
  1. * The upper rows are means and standard deviation (mean ± SD), and the lower rows are proportions (numbers and proportions,%). Abbreviations: HDL cholesterol, high-density lipoprotein cholesterol.
  2. ** t-tests for continual variables between groups with/without MetS outcome; χ2 tests were conducted for categorical variables between groups with/without MetS outcome
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