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Table 1 Baseline characteristics of participants (N = 790)

From: Serum lipid levels are positively correlated with lumbar disc herniation—a retrospective study of 790 Chinese patients

Variables Group 1 (disc herniation) Group 2 (control group) P value
(n = 396) (n = 394)
Gender (M/F) 235/161 225/168 0.524
Age (years) 41.07 ± 11.34 42.1 ± 14.35 0.263
 Range (years) 18–79 18–82  
BMI (kg/m2) 24.21 ± 3.62 24.58 ± 3.57 0.144
Labour intensity    0.846
 Light (%) 35.1 32.5
 Moderate (%) 18.7 25.1
 Heavy (%) 46.2 42.4
  1. Data on age and BMI are given as the means ± SD
  2. BMI, body mass index