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Table 1 Characteristics of the study population

From: PDX1 and MC4R genetic polymorphisms are associated with type 2 diabetes mellitus risk in the Chinese Han population

Characteristics Cases (n = 500) Controls (n = 501) p
Age, years
 Mean ± SD (years) 59.87 ± 12.87 59.85 ± 9.34 0.973a
 > 60 240 (48%) 268 (54%)  
 ≤ 60 260 (52%) 233 (46%)  
Sex    0.960b
 Male 358 (72%) 358 (71%)  
 Female 142 (28%) 143 (29%)  
Smoking    
 Yes 219 (44%) 98 (20%)  
 No 280 (56%) 164 (33%)  
 Absence 1 239 (47%)  
Drinking    
 Yes 109 (22%) 103 (21%)  
 No 385 (77%) 140 (28%)  
 Absence 6 (1%) 258 (51%)  
BMI    
 ≤ 24 203 (41%) 130 (26%)  
 > 24 239 (48%) 188 (38%)  
 Absence 58 (11%) 183 (36%)  
Complication    
 One 107 (21%)   
 Multiple 337 (67%)   
 Absence 56 (12%)   
Total cholesterol (mmol/L) 4.19 ± 2.01 4.93 ± 4.00 < 0.001a
LDL-C (mmol/L) 2.45 ± 0.90 2.62 ± 0.76 0.012a
HDL-C (mmol/L) 1.05 ± 0.72 1.15 ± 0.55 0.024a
Fasting blood glucose 7.35 ± 3.40 6.05 ± 1.60 < 0.001a
Triglyceride 1.91 ± 1.91 1.74 ± 0.10 0.088
GFR(ml/min) 96.62 ± 22.22 96.01 ± 19.78 0.710
Urea 6.52 ± 3.26 5.42 ± 2.78 < 0.001a
Creatinine 71.20 ± 52.66 68.74 ± 12.87 0.371
  1. Bold indicates a statistically significant (p < 0.05).
  2. SD standard deviation, BMI body mass index, HDL-C high-density lipoprotein cholesterol, LDL-C low-density lipoprotein cholesterol
  3. pa value obtained from an independent sample t-test
  4. pb value obtained from Pearson's χ2 test