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Table 2 Results from the univariate analyses of the comfort data

From: The comfort and safety of a novel rolling mechanical indentation device for the measurement of lumbar trunk stiffness in young adults

  Overall comfort (ordinal logit model) Comfort during the assessment (mixed-effects ordinal logit model)
Variable [Reference Category] Odds ratio (95% CI) p-value Odds ratio (95% CI) p-value
Age 1.06 (0.96, 1.18) 0.235 1.00 (0.90, 1.12) 0.975
Assessment time (minutes) 1.00 (0.99, 1.00) 0.772 1.00 (0.92, 1.09) 0.939
BMI (kg/m2) 0.96 (0.87, 1.05) 0.377 1.04 (0.94, 1.16) 0.417
Gender [Female]
- Male
    
1.44 (0.63, 3.32) 0.386 0.98 (0.41, 2.36) 0.970
Low back pain frequency 0.85 (0.70, 1.02) 0.103 0.77 (0.64, 0.94) 0.009*
Load (Newtons)    0.90 (0.89, 0.91) <0.001*
Smoking Status [Never smoked]     
- Current smoker 0.15 (0.02, 1.48) 0.087 0.11 (0.01, 1.63) 0.108
- Past smoker 0.86 (0.32, 2.31) 0.762 0.83 (0.27, 2.56) 0.740
  1. * = significant, BMI Body mass index, kg kilograms, m metres