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Table 3 Pain after 6 weeks and 6 months by one standard deviation (SD) 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 (SD) −.12 (−.60–.37) .64 .19 (−.36–.74) .50
Age (years) −.01 (−.04–.01) .32 .00 (−.03–.03) .99
BMI (points) −.06 (−.16–.05) .30 .12 (.00–.24) .04*
Sex (male) −.22 (− 1.16–.73) .65 −.48 (− 1.54–.59) .38
Preoperative pain (points) .36 (.18–.55) .00* .36 (.15–.56) .00*
Chronic pain (yes/no a) .86 (−.10–1.82) .08 .58 (−.50–1.66) .29
Intercept 2.85 (−.75–6.45) .12 − 1.68 (− 5.74–2.38) .41
  1. a Preoperative pain duration > 6 months