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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