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Table 2 Correlations between continuous variables and RMDQ scores in patients with CLBP at the Douala General Hospital, Cameroon

From: Factors influencing disability in patients with chronic low back pain attending a tertiary hospital in sub-Saharan Africa

Variables RMDQ score mean ± SD r p-value
Age in years 50.6 ± 12.2 0.27 0.002
Duration of CLBP in months, median (IQR) 33.0 (69.0) 0.09 0.305
Duration of current pain episode in months, median (IQR) 12.0 (21.0) 0.18 0.034
Pain intensity 41.3 ± 24.3 0.45 < 0.0001
Days of work loss 6.0 ± 10.2 0.36 < 0.0001
Units of Alcohol per week 5.5 ± 11.7 −0.02 0.835
BMI (kg/m 2 ) 29.6 ± 5.7 −0.01 0.942
Sleep satisfaction 65.0 ± 22.5 −0.19 0.030
Psychological wellbeing 59.9 ± 15.7 −0.40 < 0.0001
  1. SD = standard deviation, r = Pearson’s correlation coefficient, IQR = interquartile range, BMI = body mass index, RMDQ = Roland Morris Disability Questionnaire