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Table 1 Demographic characteristics of patients

From: Medication use and the risk of motor vehicle collision in West Virginia drivers 65 years of age and older: a case-crossover study

Characteristic Patient visits (N = 611)
N (%)
Age (years)
 65–69 225 (36.8)
 70–79 252 (41.2)
 80–89 119 (19.5)
 ≥90 15 (2.5)
Gender
 Male 330 (54.0)
 Female 281 (46.0)
Race
 White 560 (97.0)
 Other 17 (3.0)
 Missing 34  
Day of admittance
 Mon–thurs 368 (60.2)
 Fri–sun 243 (39.8)
Time of admittance
 7:00 AM–6:59 PM 462 (75.7)
 7:00 PM–6:59 AM 148 (24.3)
Season of admittance
 Winter 133 (21.8)
 Spring 189 (30.9)
 Summer 147 (24.1)
 Fall 142 (23.2)
Year of admittance
 2009 102 (16.7)
 2010 87 (14.2)
 2011 89 (14.6)
 2012 154 (25.2)
 2013 110 (18.0)
 2014 69 (11.3)
Method of transport
 Ambulance 248 (40.6)
 Helicopter 62 (10.2)
 Self 37 (6.1)
 Other/unknown 264 (43.2)
Treatment location
 Trauma 135 (22.1)
 Emergency and urgent care 476 (77.9)
Injury severity
 Minor 29 (9.0)
 Moderate 43 (13.4)
 Severe 250 (77.6)
 Unknown 289  
Insurance status
 Government 331 (54.2)
 Private 181 (29.6)
 None 30 (4.9)
 Other/unknown 69 (11.3)
County of residence
 Monongalia 92 (15.4)
 Other 506 (84.6)
 Missing 13  
State of residence
 WV 491 (80.4)
 Other/missing 120 (19.6)
Work status
 Employed 74 (12.4)
 Retired 523 (87.6)
 Missing 14  
Number of chronic conditions
 0 108 (17.6)
 1–3 314 (51.4)
 ≥4 189 (31.0)
 Average length of stay (days ± SD) 1.9 ± 4.9
  1. SD standard deviation