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Table 1 Baseline characteristics

From: PANSAID—PAracetamol and NSAID in combination: detailed statistical analysis plan for a randomised, blinded, parallel, four-group multicentre clinical trial

Demographic characteristics:

Age (years)

Sex (male/female)

American Society of Anaesthesiologist (ASA) physical status score

Height (cm)

Weight (kg)

Body mass index (BMI; kg/m2)

Prior use of analgesic medication

 • Use of paracetamol: no use, daily use, or ‘as needed’

 • Use of ibuprofen: no use, daily use, or ‘as needed’

 • Use of tramadol: no use, daily use, or ‘as needed’

 • Use of codeine: no use, daily use, or ‘as needed’

 • Use of other non-steroidal anti-inflammatory drugs: no use, daily use, or ‘as needed’

Surgical characteristics:

Duration of surgery (min)

Type of surgery

 • Uncemented, cemented, or hybrid total hip arthroplasty

Type of anaesthesia

 • General anaesthesia, spinal anaesthesia, conversion of spinal anaesthesia to general anaesthesia, or spinal anaesthesia with sedation

   If general anaesthesia: amount of sufentanil (μg) given 15 min before ‘end of surgery’

   If spinal anaesthesia: amount of bupivacaine (mg) used