Randomized, Double-Blind, Placebo-Controlled Study to Assess the Efficacy of Nonopioid Analgesics on Pain following Arthroscopic Knee Surgery

Table 2

Demographic and patient-referred data of the investigated four groups. Values are mean (SD) or number of patients as appropriate.

Group	Placebo (𝑛=30)	Parecoxib (𝑛=30)	Metamizole (𝑛=30)	Paracetamol (𝑛=30)	P value
Sex
Female	15	12	12	11
Male	15	18	18	19
Age (yr)					n. s.
Mean and SD	47.9 ± 11.8	48.3 ± 14.2	43.8 ± 13.7	44.5 ± 15.1
BMI (kgm^−2)					n. s.
Mean und SD	27.3 ± 3.3	27.0 ± 4.8	27.2 ± 4.7	28.1 ± 5.6
ASA physical status					n. s.
II/III	26/4	20/10	25/5	25/5
Total remifentanil consumption (mg)	0.66 ± 0.18	0.58 ± 0.15	0.64 ± 0.18	0.68 ± 0.13	n. s.
Duration of anesthesia (min)	65 ± 14	66 ± 12	68 ± 11	71 ± 10	n. s.
Arthroscopic surgical procedures	9 meniscus repair; 13 ligament reconstruction; 8 cartilage/bony reconstruction	8 meniscus repair; 13 ligament reconstruction; 9 cartilage/bony reconstruction	8 meniscus repair; 14 ligament reconstruction; 8 cartilage/bony reconstruction	9 meniscus repair; 13 ligament reconstruction; 8 cartilage/bony reconstruction	n. s.

There were no significant differences among the four groups.