Table 2 Results for linear mixed-effects and linear models of pain variables versus interaction of technique and time period, adjusting for repeated measurements over time
Outcome | Interaction/Predictor | Period - hours | ESPBN = 33 mean (SD) | WIN = 34 mean (SD) | Mean differencea(95% CI) | Comparison P value | Interaction/Global P value |
|---|---|---|---|---|---|---|---|
Intraoperative fentanyl use | Technique | 469.7 (198.4) | 491.3 (265.4) | −21.6 (− 136.2, 93.0) | 0.708 | ||
Rest pain | Period*Technique | 0 | 1.6 (2.5) | 1.9 (3.1) | −0.3 (−1.5, 0.9) | 0.606 | 0.892 |
1 | 3.3 (2.2) | 3.8 (2.4) | −0.5 (− 1.7, 0.7) | 0.382 | |||
24 | 2.4 (2.0) | 3.0 (2.2) | −0.6 (−1.8, 0.5) | 0.285 | |||
Cough pain | Period*Technique | 0 | 2.3 (3.3) | 2.9 (3.5) | −0.6 (−2.0, 0.8) | 0.375 | 0.953 |
1 | 4.4 (2.4) | 4.8 (2.8) | −0.4 (−1.7, 1.0) | 0.595 | |||
24 | 5.3 (2.3) | 5.9 (2.5) | −0.5 (−1.9, 0.8) | 0.431 | |||
Cumulative Fentanyl use | Period*Technique | 1 | 117.6 (107.8) | 104.1 (111.4) | 13.5 (−200.0, 226.8) | 0.900 | 0.911 |
24 | 760.3 (682.1) | 730.7 (527.3) | 29.6 (− 183.8, 242.9) | 0.783 | |||
Total fentanyl usedb | Technique | 877.9 (731.9) | 834.9 (557.0) | 43.0 (− 273.7, 359.8) | 0.787 |