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Table 2 Demographics of surgical patients presenting to the Anesthesia Preoperative Evaluation Clinic (7/11/06 to 8/14/06)1

From: Evaluation and implications of natural product use in preoperative patients: a retrospective review

  Total Number of patients (n = 434) Patients Taking Natural Products (n = 104) Patients Not Taking Natural Products (n = 330) Statistical Significance2
Mean Age (yrs) 54 ± 17 62 ± 12 51 ± 18 p < 0.001
Gender     NS (p = 0.239)
   Male 187 (43) 50 (48) 137 (42)  
   Female 247 (57) 54 (52) 193 (58)  
Allergies     NS (p = 0.192)
   None 204 (47) 45 (43) 159 (48)  
   Unknown 8 (2) 0 (0) 8 (2)  
   Patients with Allergies 222 (51) 59 (57) 163 (19)  
Antibiotics 174 (40) 42 (40) 132 (40) NS (p = 0.439)
Analgesia 100 (23) 30 (29) 70 (21) NS (p = 0.107)
Other 97 (22) 26 (25) 71 (22) NS (p = 0.457)
Surgical-associated 19 (4) 4 (4) 15 (5) NS (p = 0.761)
Mean Time Before Surgery (days) 6.235 ± 7 6.22 ± 6 6.24 ± 7 NS (p = 0.9791)
Type of Surgery     
   Genitourinary 130 (30) 28 (27) 102 (31) NS (p = 0.439)
   GI/Abdomen 71 (16) 12 (12) 59 (18) NS (p = 0.127)
   Joint 56 (13) 17 (16) 39 (12) NS (p = 0.230)
   Head, Eyes, Ears, Nose, Throat 47 (11) 9 (9) 38 (12) NS (p = 0.413)
   Spine 45 (10) 11 (11) 34 (10) NS (p = 0.889)
   Cardiac/Chest 41 (9) 18 (17) 23 (7) p = 0.002
   Breast 26 (6) 5 (5) 21 (6) NS (p = 0.560)
   Other/Unknown/Not Specified 14 (3) 4 (4) 10 (3) NS (p = 0.682)
   None 4 (1) 0 (0) 4 (1) 3
Interviewer     NS (p = 0.179)
   Student 302 (70) 76 (73) 226 (68)  
   Resident 16 (4) 6 (6) 10 (3)  
   Pharmacist 116 (27) 22 (21) 94 (28)  
Source of History     NS (p = 0.394)
   Patient 388 (89) 90 (87) 298 (90)  
   Family 66 (15) 17 (16) 49 (15)  
   Documentation 64 (15) 22 (21) 42 (13)  
   Outside pharmacy 27 (6) 8 (8) 19 (6)  
   Not specified 36 (8) 10 (10) 26 (8)  
Mean number of medications/natural products     
   Prescription 5 ± 4 6 ± 4 5 ± 4 p < 0.001
   Non-prescription 2 ± 2 3 ± 2 2 ± 2 p < 0.001
   Natural Products 0.4 ± 1 1.9 ± 2 0 3
  1. 1Values are number (percentage) unless otherwise indicated
  2. 2T-tests used for to compare continuous variables and Chi-square tests used for categorical variables
  3. 3Data lacking power for statistical purposes