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Table 4 Factors associated to Injury Severity Score in persons suffering RTIs from Guadalajara and León, Mexico

From: Factors associated with the severity of road traffic injuries from emergency department based surveillance system in two Mexican cities

Variables

Crude Coefficient

95% CI

Adjusted Coefficienta

95% CI

Male

0.242

***

0.158

,

0.326

0.185

***

0.113

,

0.257

Sex not specified

0.527

 

−0.063

,

1.117

0.285

 

−0.175

,

0.746

10–19 age group

0.123

 

−0.062

,

0.308

0.131

 

−0.032

,

0.293

20–59 age group

0.221

*

0.045

,

0.396

0.167

*

0.013

,

0.320

60 years and older

0.324

**

0.100

,

0.548

0.148

 

−0.032

,

0.328

Age not specified

0.532

 

−0.148

,

1.212

0.112

 

−0.416

,

0.640

Insured

0.052

 

−0.026

,

0.130

0.013

 

−0.050

,

0.077

Insurance status not specified

0.553

***

0.272

,

0.834

0.303

**

0.084

,

0.522

6–8 years of schooling

−0.132

*

−0.238

,

−0.026

− 0.109

*

− 0.197

,

−0.020

9–11 years of schooling

− 0.194

***

− 0.284

,

− 0.103

− 0.151

***

− 0.231

,

− 0.071

12 and more years of schooling

− 0.190

**

− 0.300

,

− 0.080

− 0.149

**

− 0.245

,

− 0.054

Pedestrians that hadn’t consumed alcohol

0.142

**

0.039

,

0.244

0.135

**

0.048

,

0.222

Cyclists that hadn’t consumed alcohol

−0.294

***

− 0.401

,

− 0.186

− 0.090

 

− 0.184

,

0.005

Motorcyclists that hadn’t consumed alcohol

−0.010

 

− 0.106

,

0.087

−0.024

 

− 0.107

,

0.060

Four-wheeled and other vehicle occupants that consumed alcohol

0.624

***

0.462

,

0.786

0.231

**

0.096

,

0.366

Pedestrians that consumed alcohol

−0.357

**

−0.622

,

−0.092

−0.218

*

−0.433

,

−0.003

Cyclists that consumed alcohol

−0.509

**

−0.832

,

−0.185

− 0.350

*

− 0.619

,

− 0.081

Motorcyclists that consumed alcohol

−0.221

*

−0.441

,

−0.001

− 0.106

 

− 0.286

,

0.073

Used illicit drugs

0.088

 

−0.210

,

0.386

     

Used cellphone

−0.253

 

−0.615

,

0.108

     

Use of safety devices

−0.111

**

−0.192

,

−0.029

     

Work related

−0.156

**

− 0.249

,

−0.063

     

Occurred on Sunday

0.172

***

0.079

,

0.265

0.088

*

0.013

,

0.163

Occurred during Daylight (07–19 h.)

− 0.269

***

−0.342

,

−0.197

− 0.077

*

− 0.138

,

− 0.016

Patient recruited in León

−0.423

***

−0.497

,

−0.348

− 0.391

***

− 0.458

,

− 0.324

Event occurred in a different municipality

0.417

***

0.323

,

0.512

0.076

 

−0.003

,

0.156

Municipality of occurrence not specified

0.334

***

0.211

,

0.458

0.111

*

0.011

,

0.212

Arrived to ER in a public/private service

0.839

***

0.778

,

0.900

0.767

***

0.707

,

0.826

Means of transportation to ER not specified

0.420

 

−0.021

,

0.861

0.396

 

−0.018

,

0.810

31–60 min before receiving medical attention

−0.375

***

−0.463

,

−0.288

     

More than 60 min before receiving medical attention

− 0.443

***

−0.523

,

−0.364

     

Time before receiving medical attention not specified

0.097

 

−0.140

,

0.334

     
  1. *p-value< 0.05; **p-value< 0.01; ***p-value< 0.001
  2. a Model fit: Log-likelihood: − 7439.6659; Likelihood Ratio Chi-square: 977.05; prob.>Chi-square: 0.0000; Pseudo R2: 0.0616; lnalpha: -1.04 (95% CI: −1.15, −.94); alpha: 0.35 (95% CI: 0.32, 0.39); Likelihood-ratio test of alpha = 0: Chibar2(01) = 2113.69, Prob≥chibar2 = 0.000; AIC: 14933.33