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Table 4 Binary logistic regression analyses of 6-months postoperative analgesics consumption by preoperative anxiety

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

A. Analgesics consumption by presence versus absence of preoperative anxiety a (n = 90)
  Odds ratio of analgesics consumption (95% confidence interval) P value
Preoperative anxiety (yes/no a) 1.03 (.38–2.78) .96
Age (years) 1.01 (.98–1.04) .66
BMI (points) 1.12 (1.00–1.26) .06
Sex (male) .93 (.35–2.50) .89
Preoperative pain intensity 1.47 (1.13–1.89) .00*
Chronic pain (yes/no b) 1.10 (.39–3.12) .85
Intercept .00 (−) .00
B. Analgesics consumption by one standard deviation (SD) of preoperative anxiety (n = 90)
  Odds ratio of analgesics consumption (95% confidence interval)  
Preoperative anxiety (one SD) .79 (.45–1.40) .42
Age (years) 1.01 (.95–1.04) .72
BMI (points) 1.11 (.99–1.25) .07
Sex (male) 1.00 (.37–2.73) 1.00
Preoperative pain intensity 1.50 (1.15–1.96) .00*
Chronic pain (yes/no b) 1.15 (.40–3.27) .79
Intercept .00 (−) .00
  1. a Generalized Anxiety Disorder 7-Item Scale: > 5 = preoperative anxiety: yes
  2. b Preoperative pain duration > 6 months