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. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: Laryngoscope. 2014 Aug 5;125(1):140–145. doi: 10.1002/lary.24870

Table 2.

A-B: Subgroup Analysis by Severity of Illness on Open versus TORS Elective Partial Pharyngectomies for Oropharyngeal Neoplasm in 2010 to 2011

Demographics A. Mild-to-Moderate B. Major-to-Extreme
Conventional N=939 Robotic N=523 P Conventional N=487 Robotic N=118 P
Mean Age (years) 58.9 ± 10.4 59.0 ± 10.1 0.805 60.3 ± 9.9 59.3 ± 11.4 0.339
Sex-Female 22.9% 23.3% 0.846 18.1% 22.0% 0.359
Hx EtOH 2.6% 1.7% 0.361 7.0% 0 0.001
Hx Tobacco 46.8% 47.2% 0.870 52.7% 43.2% 0.081
HPV 2.7% 1.9% 0.476 4.3% 4.2% 1.000
Hx XRT 5.1% 3.1% 0.082 13.2% 4.2% 0.005
Hx Chemo 2.7% 1.0% 0.033 8.2% 14.4% 0.052
# Chronic Conditions 4.0 ± 2.0 3.9 ± 2.1 0.626 6.2 ±2.7 5.4 ± 2.0 0.004
Severity 2 (Moderate) 67.7% 61.6% 0.019 29.4% 20.3% 0.051
Trach Status 1.5% 0 0.003 72.1% 14.3% <0.001
Gastrostomy Status 2.6% 5.2% 0.011 34.1% 13.6% <0.001
Inpatient Data
Mean Length of Stay (days) 5.2 ±3.4 3.7 ± 2.2 <0.001 12.4 ± 10.9 7.6 ± 7.0 <0.001
Mean Total Charges ($) 98,228 ± 84,889 67,317 ± 39,284 <0.001 204,129 ± 170,540 131,737 ± 73,367 <0.001
Mean Total Cost ($) 29,365 ± 23,042 20,706 ± 11,520 <0.001 58,904 ± 43,747 44,800 ± 30,318 0.001
# Diagnoses 6.4 ± 3.0 6.1 ± 3.3 0.107 12.1 ± 4.9 11.1 ± 4.3 <0.001
# Procedures 5.3 ±2.3 4.9 ± 1.5 0.001 8.2 ± 3.8 6.8 ± 3.1 0.022
Trach Placed 26.9% 1.0% <0.001 72.1% 14.3% <0.001
Gastrostomy Placed 11.6% 1.7% <0.001 34.1% 13.6% <0.001
Discharged Home/Home Health 93.6% 99.0% <0.001 71.8% 78.8% 0.133
Complications
Died During Hospitalization 0 0 --- 2.1% 4.2% 0.186
Blood Transfusion During Stay 3.1% 0 <0.001 18.7% 21.2% 0.602
Respiratory Failure/Insuff/Arrest 2.7% 2.1% 0.599 48.3% 68.6% <0.001
Aspiration PNA 0 0 --- 6.2% 16.9% 0.001
Fistula 1.1% 1.0% 1.000 4.1% 0 0.019
Periop Hemorrhage 2.8% 3.1% 0.746 4.3% 8.5% 0.099
Wound Breakdown 1.1% 0 0.017 10.5% 0 <0.001
Reintubation 2.2% 1.0% 0.098 2.3% 17.8% <0.001
Dysphagia 8.0% 19.5% <0.001 24.7% 35.3% 0.021