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Table 5 Multivariate analysis of the correlation between research factors and IKDC classification

From: Factors influencing postoperative outcomes in patients with symptomatic discoid lateral meniscus

Variable B S.E. Wald p OR 95% CI
Lower Upper
Sex
 Male 0.532 0.234 5.151 0.023* 1.702 1.076 2.697
 Female‡ 1.000
BMI (kg/m2)
  < 18.5 1.104 0.497 4.926 0.026* 3.016 1.138 7.996
 18.5 ~ 25 0.531 0.285 3.467 0.063 1.701 0.972 2.974
  ≥ 25‡ 1.000
Work intensity
 Grade 0 ~ 1 0.331 0.506 0.427 0.514 1.392 0.516 3.751
 Grade 2 −0.223 0.481 0.214 0.644 0.800 0.312 2.056
 Grade 3 ~ 4‡ 1.000
History of trauma
 No −0.179 0.232 0.597 0.440 0.836 0.531 1.317
 Yes‡ 1.000
Age of onset (year)
  ≤ 14 3.034 0.498 37.069 0.000* 20.780 7.822 55.147
 14 ~ 25 2.142 0.418 26.293 0.000* 8.516 3.755 19.317
 25 ~ 45 0.545 0.33 2.732 0.098 1.725 0.904 3.294
  ≥ 45‡ 1.000
Symptoms duration (month)
  ≤ 1 1.256 0.37 11.501 0.001* 3.511 1.699 7.265
 1 ~ 6 1.242 0.303 16.826 0.000* 3.463 1.914 6.265
 6 ~ 24 1.180 0.287 16.949 0.000* 3.254 1.855 5.703
 >24‡ 1.000
Medial meniscus tear
 No 0.089 0.624 0.021 0.886 1.093 0.322 3.717
 Yes‡ 1.000
Outerbridge grade
 No injury 1.853 0.469 15.629 0.000* 6.379 2.545 15.975
 Grade I 1.466 0.572 6.569 0.010* 4.332 1.412 13.277
 Grade II 0.758 0.488 2.418 0.120 2.134 0.820 5.551
 Grade III ~ IV‡ 1.000
K-L grade
 Grade 0 0.184 0.690 0.071 0.790 1.202 0.311 4.646
 Grade I −0.112 0.685 0.027 0.870 0.894 0.233 3.425
 Grade II −0.563 0.707 0.634 0.426 0.569 0.142 2.277
 Grade III ~ IV‡ 1.000
Type of surgery
 Saucerization 0.546 0.387 1.983 0.159 1.726 0.807 3.688
 Saucerization with repair −0.262 0.678 0.149 0.699 0.770 0.204 2.907
 Total meniscectomy‡ 1.000
  1. IKDC International Knee Documentation Committee, BMI body mass index, K-L grade Kellgren–Lawrence grade
  2. ‡ represent reference group; *Statistically significant (P < .05)