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Table 2 Patient demographics and encounter characteristics

From: Use of electronic health record data to identify skin and soft tissue infections in primary care settings: a validation study

  Family medicine Internal medicine Pediatrics Overall
(n=449) (n=163) (n=119) (n=731)
Age, mean years ± SD 42.9 ± 21.0 53.1 ± 15.0 5.5 ± 5.4 39.1 ± 23.7
Female sex 257 (57.2) 88 (54.0) 53 (44.5) 398 (54.4)
Race     
 White 413 (92.0) 145 (89.0) 93 (78.2) 651 (89.1)
 Black 11 (2.4) 11 (6.7) 7 (5.9) 29 (4.0)
 Asian/Pacific Islander 13 (2.9) 2 (1.2) 11 (9.2) 26 (3.6)
 Other 5 (1.1) 4 (2.5) 6 (5.0) 15 (2.1)
 Unknown/not reported 7 (1.6) 1 (0.6) 2 (1.7) 10 (1.4)
Hispanic ethnicity 8 (1.8) 1 (0.6) 26 (21.8) 35 (4.8)
Initial encounter for SSTI 290 (64.6) 115 (70.6) 109 (91.6) 514 (70.3)
Encounter month     
 January 116 (25.8) 27 (16.6) 27 (22.7) 170 (23.3)
 April 98 (21.8) 40 (24.5) 42 (35.3) 180 (24.6)
 July 116 (25.8) 48 (29.4) 30 (25.2) 194 (26.5)
 October 119 (26.5) 48 (29.4) 20 (16.8) 187 (25.6)
ICD-9 code for SSTI 449 (100.0) 163 (100.0) 119 (100.0) 731 (100.0)
CPT code for IND 61 (13.6) 11 (6.7) 4 (3.4) 76 (10.4)
Positive wound culture 62 (13.8) 16 (9.8) 25 (21.0) 103 (14.1)
SSTI Identification Criteria     
 ICD-9 or CPT code or positive culture 449 (100.0) 163 (100.0) 119 (100.0) 731 (100.0)
 ICD-9 SSTI code only 412 (91.8) 147 (90.2) 110 (92.4) 669 (91.5)
 Cellulitis/Abscess ICD-9 code 305 (67.9) 101 (62.0) 42 (35.3) 448 (61.3)
 Cellulitis/Abscess ICD-9 code, body site specific 267 (59.5) 86 (52.8) 35 (29.4) 388 (53.1)
  1. Note: Data are no. (%), unless otherwise indicated. The “Other” race category includes Native Americans, Alaskan Natives, and individuals reporting multiple races.
  2. SD, standard deviation, SSTI, Skin and soft tissue infection,ICD-9, International Classification of Diseases, 9th Revision, CPT, Current Procedure Terminology, IND, Incision and drainage.