Table 2

Health characteristics and healthcare use of subjects sharing their social media data for the study versus a sample of patients visiting same ED during study enrolment period

 ED sample (n=19 182)Participants sharing social media and EMR data (n=1008)
n (%)n (%)ORp Value
Triage class
 1 (most urgent)103 (1)2 (0)0.360.2
 25090 (27)109 (11)0.33<0.0001
 38466 (45)551 (55)1.47<0.0001
 43709 (20)337 (33)2.04<0.0001
 5 (least urgent)762 (4)0 (0)0<0.0001
Arrival mode to the ED
 Emergency services3944 (20)79 (8)0.32<0.0001
 Self14 708 (78)909 (90)2.56<0.0001
 Other148 (1)20 (2)0.630.5
Primary insurance
 Uninsured/self-pay4028 (21)270 (27)1.34<0.0001
 Private6522 (34)634 (63)3.19<0.0001
 Medicaid or Medicare7673 (40)95 (9)0.15<0.0001
 Other959 (5)5 (0)0.09<0.0001
ED discharge diagnoses*
 Diseases of the musculoskeletal system and connective tissue5190 (28)407 (40)1.78<0.0001
 Diseases of the genitourinary system2284 (12)281 (28)2.8<0.0001
 Diseases of the nervous system and sense organs1191 (6)266 (26)5.3<0.0001
 Diseases of the respiratory system1364 (7)235 (23)3.89<0.0001
 Injury and poisoning4962 (26)263 (26)0.980.9
 Diseases of the digestive system1669 (9)177 (17)2.19<0.0001
 Diseases of the circulatory system1273 (7)143 (14)2.28<0.0001
 Diseases of the skin and subcutaneous tissue1293 (7)104(10)1.56<0.0001
 Complications of pregnancy, childbirth and the puerperium301 (2)42 (4)2.67<0.0001
 Symptoms, signs and ill-defined conditions and factors influencing health status13 070 (70)502 (50)0.44<0.0001
Disposition
 Treated and discharged12 994 (68)865 (86)2.71<0.0001
 Admitted to inpatient3347 (18)83 (8)0.41<0.0001
 Left without treatment complete190 (1)7 (1)0.690.4
 Transferred110 (1)2 (0)0.340.1
 Assigned to observation1323 (7)45 (4)0.620.001
Two or more ED visits to 1 of 3 hospitals in the EMR network†
 YesNot available222 (22)
 NoNot available770 (76)
  • *Included are all listed discharge diagnoses from the ED visit, totals >100% as an individual may have up to three diagnoses across or within categories according to Clinical Classifications Software.46

  • †Administrative database for ED sample did not include ED visit history; these data were manually extracted from sample of sharers for consented to share their EMR with researchers.

  • ED, emergency department; EMR, electronic medical record.