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

Table 3 Pain after 6 weeks and 6 months by one standard deviation (SD) of preoperative anxiety (n = 100)

	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

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