Predictive factors of postoperative fentanyl consumption in patients with inflammatory bowel disease: a retrospective cohort study

Table 2 Univariable analysis of postoperative fentanyl consumption (correlation analysis)

	Correlation coefficient	95% CI (lower, upper)	P-value
Age	−0.199	−0.336, − 0.054	0.008
Height	0.021	−0.126, 0.168	0.782
BMI	−0.158	−0.298, − 0.012	0.035
Operative time	− 0.041	− 0.186, 0.107	0.589
Blood loss	−0.097	−0.241, 0.050	0.194
Blood transfusion	0.004	−0.143, 0.151	0.957
Intraoperative fentanyl	−0.280	0.138, 0.410	0.0001
Intraoperative droperidol	−0.088	−0.232, 0.059	0.241
Droperidol concentration in the PCA solution	−0.217	− 0.353, − 0.073	0.004
Intraoperative dexamethasone	− 0.036	− 0.182, 0.111	0.632
WBC	0.021	−0.126, 0.167	0.777
Platelet count	0.153	0.007, 0.293	0.040
Hemoglobin	−0.096	−0.239. 0.051	0.201
NLR^a	−0.020	−0.166, 0.128	0.792
PLR^a	−0.139	−0.280, 0.009	0.065
CRP	0.124	−0.023, 0.266	0.099
60-min ESR^b	0.090	−0.063, 0.239	0.248
eGFR [11]	0.205	0.060, 0.341	0.006
Fibrinogen^c	0.085	−0.064, 0.231	0.263
Serum albumin	−0.060	−0.204, 0.088	0.429
Disease duration	−0.166	−0.305, − 0.020	0.026
Past laparotomy	−0.074	− 0.218, 0.074	0.325

^a1 missing data point deleted
^b13 missing data points deleted
^c5 missing data points deleted
Abbreviations: BMI Body mass index, CI Confidence interval, CRP C-reactive protein, eGFR Estimated glomerular filtration rate, ESR Erythrocyte sedimentation rate, NLR Neutrophil-to-lymphocyte ratio, PCA Patient-controlled analgesia, PLR Platelet-to-lymphocyte ratio, WBC White blood cell count

ISSN: 1471-2253