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Table 3 Results of multifactorial logistic analysis with step-wise factor selection

From: Observation of the natural course of type 3 spinal muscular atrophy: data from the polish registry of spinal muscular atrophy

Model fit χ2 53.59, p < 0.0001
Parameter   Estimate Wald Chi-square Pr > χ2 Odds ratio 95% Wald confidence limits
Intercept    − 1.37 22.85  < 0.0001    
SMN2 copies (≤ 3 vs. 4) 1 0.69 5.31 0.021 2.00 0.64 6.74
Sex (male vs. female) 2 0.70 6.25 0.012 2.02 1.16 3.49
Disease duration* 3 0.08 47.69  < 0.0001 1.1 1.06 1.20
  1. *Disease duration = the interval between the onset and the last follow-up