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Table 2 Pain after 6 weeks and 6 months by presence versus absence of preoperative anxiety (n = 100)

From: Anxiety and its predictive value for pain and regular analgesic intake after lumbar disc surgery - a prospective observational longitudinal study

  Pain increase at 6-weeks. Pain increase at 6-months.
  NRS Points (95% confidence interval) P value NRS Points (95% confidence interval) P value
Preoperative anxiety (yes/no) −.30 (−1.22–.63) .52 .42 (−.63–1.46) .43
Age (years) −.02 (−.04–.01) .31 .00 (−.03–.03) .98
BMI (points) −.06 (−.16–.05) .29 .13 (.01–.25) .04*
Sex (male) −.22 (− 1.15–.71) .64 −.46 (− 1.51–.59) .39
Preoperative pain (points) .36 (.18–.54) .00* .36 (.16–.56) .00*
Chronic pain (yes/no a) .88 (−.08–1.85) .07 .55 (−.54–1.63) .32
Intercept 3.04 (−.56–6.64) .10 − 1.96 (−6.02–2.10) .34
  1. a Preoperative pain duration > 6 months