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Table 4 Crude and adjusted odds ratios of serum lipids for low back pain by sex

From: Association between serum lipids and low back pain among a middle-aged Japanese population: a large-scale cross-sectional study

  Total Low back pain Crude Adjusteda
N n (%) OR 95%CI OR 95%CI
Men
 LDL-C (mg/dL)
  Normal (<  140) 119,824 2605 (2.2) 1.00   1.00  
  High (≥ 140) 49,782 1121 (2.3) 1.04 0.97–1.11 1.04 0.96–1.11
 HDL-C (mg/dL)
  Normal (≥ 40) 154,412 3294 (2.1) 1.00   1.00  
  Low (<  40) 15,194 432 (2.8) 1.34 1.21–1.49 1.34 1.20–1.48
 LDL-C/HDL-C ratio
  Low (<  2.5) 105,067 2178 (2.1) 1.00   1.00  
  High (≥ 2.5) 64,539 1548 (2.4) 1.16 1.09–1.24 1.17 1.09–1.26
Women
 LDL-C (mg/dL)
  Normal (<  140) 63,407 1278 (2.0) 1.00   1.00  
  High (≥ 140) 25,354 611 (2.4) 1.20 1.09–1.32 1.02 0.92–1.13
 HDL-C (mg/dL)
  Normal (≥ 40) 86,920 1828 (2.1) 1.00   1.00  
  Low (<  40) 1841 61 (3.3) 1.59 1.23–2.07 1.32 1.02–1.72
 LDL-C/HDL-C ratio
  Low (<  2.5) 70,748 1398 (2.0) 1.00   1.00  
  High (≥ 2.5) 18,013 491 (2.7) 1.39 1.25–1.54 1.15 1.03–1.29
  1. OR: Odds ratio, CI: Confidence interval, LDL-C: Low-density lipoprotein-cholesterol, HDL-C: High-density lipoprotein-cholesterol
  2. a Adjusted for age, body mass index, smoking status, alcohol intake, and physical activity