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Table 2 Multivariable adjusted risk ratios (RRa) for analgesic consumption

From: Predictors of the use of analgesic drugs 1 year after joint replacement: a single-center analysis of 13,000 hip and knee replacements

 

Preoperative (0–3 months)

Postoperative (9–12 months)

Any analgesic**

Any analgesic**

Acetaminophen

NSAID

Opioid

Age, years

 < 65

1

1

1

1

1

 65–75

1.02 (0.97–1.1)

1.1 (1.03–1.2)

1.4 (1.2–1.7)

0.94 (0.85–1.03)

1.03 (0.87–1.2)

 > 75

1.01 (0.95–1.1)

1.2 (1.1–1.3)

2.2 (1.9–2.5)

0.77 (0.68–0.86)

1.06 (0.89–1.3)

Female gender

1.1 (1.1–1.2)

1.2 (1.1–1.3)

1.4 (1.2–1.6)

1.2 (1.1–1.3)

1.1 (0.98–1.3)

BMI, kg/m2

 < 25

1

1

1

1

1

 25 < 30

1.04 (0.98–1.1)

1.1 (0.97–1.2)

1.01 (0.87–1.2)

1.1 (0.96–1.2)

1.01 (0.83–1.2)

 30–35

1.1 (1.05–1.2)

1.1 (1.04–1.2)

1.2 (1.03–1.4)

1.1 (0.99–1.3)

1.1 (0.91–1.4)

 > 35

1.3 (1.2–1.4)

1.4 (1.3–1.6)

1.6 (1.4–2.0)

1.5 (1.3–1.7)

1.4 (1.1–1.8)

BMI, constant, per increase of 1 kg/m2

1.02 (1.01–1.02)

1.02 (1.02–1.02)

1.03 (1.02–1.04)

1.02 (1.01–1.03)

1.02 (1.01–1.03)

Charlson Comorbidity Index***

 0

1

1

1

1

1

 1

1.1 (1.00–1.1)

1.2 (1.1–1.3)

1.3 (1.2–1.5)

1.04 (0.94–1.2)

1.3 (1.1–1.5)

 2 or more

1.1 (1.01–1.2)

1.2 (1.1–1.4)

1.4 (1.2–1.6)

1.02 (0.87–1.2)

1.8 (1.5–2.2)

Diabetes

 No

1

1

1

1

1

 Yes, but without insulin medication

0.99 (0.94–1.04)

1.1 (0.99–1.3)

1.01 (0.90–1.1)

1.02 (0.93–1.1)

1.1 (0.95–1.3)

 Yes, with insulin medication

1.02 (0.93–1.1)

0.98 (0.88–1.1)

0.95 (0.79–1.2)

0.89 (0.74–1.1)

1.1 (0.86–1.4)

Cardiac disease****

0.86 (0.80–0.93)

0.94 (0.85–1.04)

0.96 (0.81–1.1)

0.77 (0.65–0.91)

1.2 (0.94–1.4)

Psychotic disorder

1.1 (0.92–1.2)

1.1 (0.94–1.3)

1.2 (0.93–1.7)

0.77 (0.55–1.1)

1.4 (0.96–1.9)

Neurodegenerative disease*****

1.1 (0.96–1.3)

1.03 (0.84–1.3)

1.4 (1.1–1.9)

0.88 (0.59–1.3)

0.62 (0.35–1.1)

Chronic lung disease

1.1 (0.98–1.2)

1.1 (0.97–1.2)

1.1 (0.89–1.3)

1.2 (1.03–1.4)

1.1 (0.86–1.4)

Hypertension

1.01 (0.97–1.1)

1.1 (0.997–1.1)

1.04 (0.93–1.2)

1.03 (0.93–1.1)

1.1 (0.98–1.3)

History of malignancy

1.1 (0.96–1.3)

1.1 (0.89–1.3)

1.00 (0.74–1.4)

1.2 (0.86–1.6)

0.97 (0.68–1.4)

Epilepsy

1.1 (0.91–1.3)

1.2 (0.99–1.6)

1.3 (0.86–2.0)

0.93 (0.61–1.4)

1.9 (1.3–3.0)

Knee replacement vs hip replacement

0.77 (0.74–0.81)

1.2 (1.1–1.3)

1.1 (1.01–1.3)

1.2 (1.1–1.3)

1.2 (1.1–1.4)

Preoperative analgesic use******

2.6 (2.5–2.8)

2.7 (2.4–3.0)

2.7 (2.4–2.9)

3.9 (3.3–4.6)

  1. RR (95% CI) adjusted with age (continuous), gender, joint, Charlson Comorbidity Index, BMI (continuous), laterality (unilateral vs bilateral), and use of antidepressant 1 year before surgery
  2. **Acetaminophen, NSAID, opioid
  3. ***Modified Charlson Comorbidity Index
  4. ****Coronary artery disease, heart failure, chronic arrhythmia
  5. *****Alzheimer’s or Parkinson’s disease
  6. ******Use of any analgesic drug (acetaminophen, NSAID, and/or opioid) preoperatively