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. 2022 Mar 23;32(7):792–800. doi: 10.1111/pan.14438

Table 4.

Multivariable Logistic Regression to Evaluate Association of Demographic, Comorbidities, and Hospital Characteristics of Patients with Ultrasound Use a

Ultrasound use (N = 1282) Non‐ultrasound use (N = 11 446) p‐value
Odds Ratio 95% CI
Race
White non‐Hispanic Reference
White Hispanic 1.02 0.82–1.27 .863
Black non‐Hispanic 1.50 1.15–1.96 .003
Age (year) 0.93 0.90–0.97 <.001
Sex
Female Reference
Male 0.68 0.56–0.81 <.001
Weight (kg) 1.02 1.01–1.02 <.001
Body mass index category
Underweight (<5 percentile) Reference
Healthy weight (5–84th percentile) 1.15 0.83–1.59 .404
Overweight (85–94th percentile) 1.54 1.18–2.01 .001
Obese (95th percentile or greater) 1.65 1.22–2.23 .001
Renal disease 1.27 0.93–1.73 .133
Cardiac disease 1.81 1.36–2.41 <.001
Prematurity 1.21 0.42–3.44 .725
ASA physical status
I Reference
II 1.92 1.33–2.77 .001
III 5.58 3.86–8.07 <.001
IV 10.47 6.19–17.70 <.001
Practitioner type
Attending anesthesiologist Reference
CRNA 0.90 0.70–1.16 .408
RN 0.05 0.014–0.17 <.001
Trainee 0.62 0.51–0.76 <.001
Patient class
Outpatient Reference
Inpatient 3.48 2.75–4.40 <.001
Emergency status 1.50 0.81–2.77 .196
Surgical subspecialty
Otolaryngology Reference
Cardiology 6.16 4.11–9.25 <.001
Cardiac surgery 2.16 1.30–3.58 .003
Dentistry 1.76 0.94–3.32 .079
Gastroenterology 1.17 0.69–1.97 .567
Medical imaging 1.90 1.33–2.73 <.001
Neurosurgery 1.08 0.65–1.78 .775
Ophthalmology 0.48 0.15–1.57 .224
Orthopedics 2.65 1.83–3.85 <.001
Pediatric surgery 1.97 1.38–2.82 <.001
Plastics 2.03 1.07–3.86 .031
Urology 1.27 0.77–2.08 .350

Abbreviations: ASA, American Society of Anesthesiologists; CI, confidence interval; CRNA, certified registered nurse anesthetist; RN, registered nurse.

a

Body mass index data missing for all children less than 2 years old (28%) because there are no norms of children in this age group.