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Table 1 Demographics, preoperative, and surgical characteristics of patients undergoing single-level spine percutaneous kyphoplasty

From: Spine surgeon specialty differences in single-level percutaneous kyphoplasty

VariableOrthopedic SurgeonNeurosurgeonP value †
Available Number (n = 2248)n = 1019 (45.3%)n = 1229 (54.7%)
Demographics
 Hospital status
  Outpatient653 (64.1)695 (56.6)< 0.001
  Inpatient366 (35.9)534 (43.4)
 Age Range, year
  64 or less128 (12.6)238 (19.4)< 0.001
  65–84629 (61.7)721 (58.7)
  85 or greater262 (25.7)270 (21.9)
 Sex
  Male295 (29.0)369 (30.0)0.61
  Female724 (71.0)860 (70.0)
 Body mass index, kg/m2 (n = 2233)
  BMI ≤ 29.9780 (77.5)909 (74.0)0.071
  BMI ≥30228 (22.5)318 (25.8)
 Race (n = 2132)
  Caucasian887 (90.4)1097 (89.3)< 0.001
  African American19 (1.9)32 (2.6)
 Asian70 (7.1)18 (1.5)
  Others5 (0.5)4 (0.3)
 Functional status (n = 2191)
  Independent828 (81.2)1090 (88.7)< 0.001
  Dependent160 (15.7)113 (9.2)
 Transfer status (n = 2245)
  Not transferred (admitted from home)955 (93.8)1156 (94.1)0.689
  Transfer from other63 (6.2)71 (5.8)
 Diagnosis
  Pathologic fracture584 (57.3)618 (50.3)< 0.001
  Traumatic fracture364 (35.7)517 (42.1)
  Others111 (10.9)94 (7.6)
Preoperative Comorbidities
 Anemia385 (37.8)509 (41.4)0.08
 Recent weight loss (> 10% of body weight in last 6 months)13 (1.3)19 (1.5)0.59
 All diabetes mellitus
  Insulin-dependent diabetes74 (7.3)101 (8.2)0.441
  Non-insulin-dependent diabetes94 (9.2)127 (10.3)
 Pulmonary
  Smoking (current smoker within 1 year)121 (11.9)157 (12.8)0.519
  Dyspnea121 (11.9)163 (13.3)0.069
  Chronic obstructive pulmonary disease150 (14.7)176 (14.3)0.789
 Cardiovascular
  Hypertension requiring medicating692 (67.9)781 (63.5)0.03
  Congestive heart failure27 (2.6)27 (2.2)0.485
 Urinary system
  Acute renal failure12 (1.2)7 (0.6)0.117
  Dialysis use3 (0.3)2 (0.2)0.509
 Other system disease
  Disseminated cancer29 (2.8)86 (7)< 0.001
  Bleeding disorder86 (8.4)88 (7.2)0.258
  Preoperative blood transfusion of ≥1 unit of packed/whole RBCs within 72 h of operation11 (1.1)10 (0.8)0.514
  Steroid use for chronic condition128 (12.6)150 (12.2)0.798
  Systemic sepsis26 (2.6)30 (2.4)0.867
Operative variables
 Anatomic Level of Operation
  Thoracic Spine476 (46.7)611 (49.7)0.156
  Lumbar Spine543 (53.3)618 (50.3)
 Wound classification
  Clean1017 (99.8)1227 (99.8)0.851
  Clean/contaminated2 (0.2)1 (0.1)
  Contaminated00
  Dirty/infected01 (0.1)
 ASA classification (n = 2244)
  1-No Disturb8 (0.8)7 (0.6)0.097
  2-Mild Disturb264 (25.9)287 (23.4)
  3-Severe Disturb661 (64.9)796 (64.8)
  4-Life Threat84 (8.2)136 (11.1)
  5-Moribund01 (0.1)
 Type of anesthesia (n = 2247)
  General921 (90.4)1082 (88)0.085
  All others98 (9.6)146 (11.9)
  Emergency case18 (1.8)46 (3.7)0.005
  Operative time, mina33.94 ± 40.9935.95 ± 34.030.2041
 Discharge Destination (n = 2232)
  Home823 (80.1)1016 (82.7)0.637
  Facility Which Not Home176 (17.2)206 (16.8)
  Days from Operation to Discharge, daya1.30 ± 2.911.61 ± 4.550.06
  1. Data are reported as number (percentage) of patients except where noted. For variables with missing data, the number of available observations is given in brackets
  2. ASA American Society of Anesthesiologists, N number of patients, SD standard deviation, BMI body mass index
  3. aValues are presented as the mean and the standard deviation
  4. †Calculated using ANOVA for continuous variables and chi-square tests for categorical variables, differences were considered significant at p < 0.05, and these values are listed in bold type