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Table 2 The results of univariate analysis

From: Total polyunsaturated fatty acid intake and the risk of non-alcoholic fatty liver disease in Chinese Han adults: a secondary analysis based on a case–control study

  Statistics OR (95% CI) P-value
Sex
 Men 728 (68.16%) Ref  
 Women 340 (31.84%) 1.00 (0.77, 1.29) 1.000
Age
 < 40 year 278 (26.03%) Ref  
 40–60 674 (63.11%) 1.00 (0.76, 1.33) 0.9809
 ≥ 60 116 (10.86%) 0.86 (0.56, 1.33) 0.4909
Education level
 Primary school and less than 89 (8.33%) Ref  
 Junior middle and high school 425 (39.79%) 1.35 (0.85, 2.14) 0.1974
 Junior college or above 554 (51.87%) 1.17 (0.75, 1.84) 0.4866
Marital status
 Single 111 (10.39%) Ref  
 Married or other 957 (89.61%) 1.30 (0.88, 1.93) 0.1933
BMI
 < 18.5 kg/m2 23 (2.15%) Ref  
 18.5–24.0 561 (52.53%) 3.12 (0.92, 10.65) 0.0687
 ≥ 24.0 484 (45.32%) 17.78 (5.20, 60.82)  < 0.0001
Income
 < 2000 yuan/month 67 (6.27%) Ref  
 2000–3000 331 (30.99%) 0.99 (0.58, 1.67) 0.9608
 ≥ 3000 670 (62.73%) 1.16 (0.70, 1.92) 0.5605
Smoking status
 Never smoker 750 (70.22%) Ref  
 Smoker 318 (29.78%) 1.15 (0.89, 1.50) 0.2845
Tea-drinking status
 No drinking 433 (40.54%) Ref  
 Drinking 635 (59.46%) 1.31 (1.03, 1.68) 0.0293
Occupation
 Mental labour 310 (29.03%) Ref  
 Physical labour 247 (23.13%) 0.79 (0.56, 1.10) 0.1575
 Other 511 (47.85%) 1.04 (0.78, 1.37) 0.8043
Physical exercise
 Light 350 (32.77%) Ref  
 Moderate 311 (29.12%) 0.72 (0.53, 0.98) 0.0363
 Severe 407 (38.11%) 0.73 (0.54, 0.97) 0.0281
History of hyperlipidemia
 No 1019 (95.41%) Ref  
 Yes 49 (4.59%) 0.88 (0.50, 1.56) 0.6610
History of diabetes
 No 1031 (96.54%) Ref  
 Yes 37 (3.46%) 1.49 (0.76, 2.90) 0.2442
History of hypertension
 No 811 (75.94%) Ref  
 Yes 257 (24.06%) 1.89 (1.42, 2.51)  < 0.0001
MUFA intake 32.64 ± 8.97 1.04 (1.02, 1.05)  < 0.0001
Total PUFA intake 24.62 ± 4.90 1.13 (1.10, 1.17)  < 0.0001
Nut intake 8.01 ± 12.97 1.00 (0.99, 1.01) 0.7431
Energy intake 2215.79 ± 609.74 1.00 (1.00, 1.00) 0.01
  1. BMI body mass index, MUFA monounsaturated fatty acid, PUFA polyunsaturated fatty acid, OR odds ratio, Ref reference