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Table 1 Characteristics of Study by Liver Disease, NHANES, 2001–2012

From: Non-alcoholic Fatty Liver Disease (NAFLD) is associated with impairment of Health Related Quality of Life (HRQOL)

Variables HCV NAFLD Control P valuea P valueb P valuec
(n = 346) (n = 3333) (n = 5982)
Age (years): mean (SE) 48.86 (0.50) 51.31 (0.36) 47.50 (0.39) 0.058 <.0001 <.0001
Body Mass Index (kg/m2): mean (SE) 27.26 (0.41) 33.66 (0.14) 26.22 (0.10) 0.037 <.0001 <.0001
Male 228 (66.87 %) 1817 (57.79 %) 3103 (50.03 %) <.0001 <.0001 0.014
Race,     <.0001 0.034 <.0001
 White 134 (63.53 %) 1612 (72.46 %) 3221 (75.15 %)    
 Black 137 (22.87 %) 684 (10.88 %) 1164 (9.50 %)    
 Other 75 (13.60 %) 1037 (16.66 %) 1597 (15.35 %)    
Comorbid disease,       
 Diabetes 56 (13.03 %) 918 (20.75 %) 503 (6.05 %) <.0001 <.0001 0.010
 Hyperlipidemia 177 (44.12 %) 2051 (57.01 %) 2286 (32.50 %) <.0001 <.0001 <.0001
 High blood pressure 119 (29.46 %) 2020 (58.99 %) 2351 (38.35 %) 0.009 <.0001 <.0001
 Insulin resistance 81 (47.34 %) 2147 (66.03 %) 442 (12.24 %) <.0001 <.0001 <.0001
 Heart disease 47 (9.46 %) 540 (13.83 %) 558 (6.79 %) 0.119 <.0001 0.040
 Asthma 44 (14.62 %) 394 (12.69 %) 433 (7.87 %) 0.001 <.0001 0.468
NHANES cycle,     0.135 0.696 0.152
 2001–2002 71 (24.07 %) 541 (16.24 %) 1022 (16.73 %)    
 2003–2004 49 (16.81 %) 534 (17.15 %) 856 (15.29 %)    
 2005–2006 41 (13.80 %) 499 (16.98 %) 893 (16.47 %)    
 2007–2008 75 (18.37 %) 630 (17.07 %) 1056 (16.63 %)    
 2009–2010 53 (11.37 %) 602 (15.22 %) 1117 (16.74 %)    
 2011–2012 57 (15.58 %) 527 (17.35 %) 1038 (18.13 %)    
  1. Pvalues were reported by chi-square test for categorical variables and t-test for numerical variables;
  2. aComparisons between HCV and Control
  3. bComparisons between NAFLD and Control
  4. cComparisons between HCV and NAFLD