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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: Plast Reconstr Surg. 2017 Feb;139(2):444e–454e. doi: 10.1097/PRS.0000000000002936

Table 1. Characteristics of individuals under 65 with digit amputation injuries from 2007 to 2012, stratified by emergency department wait time.

ED Wait Time (Quartile) Q1a Q2a Q3a Q4a Not Specified

N=12,577 3,045 2,963 2,914 2,872 783

Mean SE Mean SE Mean SE Mean SE Mean SE
Age
 Less than 18 0.12 0.01 0.13 0.01 *0.10 0.01 *0.09 0.01 0.12 0.01
 18 to 44 0.52 0.01 *0.49 0.01 *0.48 0.01 0.54 0.01 *0.48 0.02
 44 to 64 0.35 0.01 *0.39 0.01 *0.42 0.01 *0.37 0.01 *0.40 0.02

Female 0.12 0.01 0.13 0.01 0.13 0.01 *0.14 0.01 0.13 0.01

Race
 White 0.71 0.01 0.73 0.01 0.70 0.01 *0.63 0.01 *0.64 0.02
 Non-White 0.29 0.01 0.27 0.01 0.30 0.01 *0.38 0.01 *0.36 0.02
 Race Not Specified 0.07 0.00 0.06 0.00 *0.06 0.00 0.07 0.00 *0.12 0.01

Habits/Co-morbidities
 Smoking 0.13 0.01 0.13 0.01 *0.15 0.01 0.13 0.01 *0.06 0.01
 Alcohol 0.03 0.00 0.03 0.00 0.03 0.00 *0.05 0.00 0.04 0.01
 Number of co-morbidities 0.26 0.01 0.24 0.01 0.27 0.01 0.28 0.01 *0.17 0.02

Injury Characteristics
 Injury Severity Score (ISS) 5.22 0.10 *4.60 0.08 *4.21 0.07 *4.66 0.09 *4.00 0.15
 Multiple Digit 0.29 0.01 *0.24 0.01 *0.17 0.01 *0.14 0.01 *0.23 0.02
 Thumb 0.25 0.01 *0.19 0.01 *0.16 0.01 *0.13 0.01 *0.18 0.01

Insurance
 Private 0.55 0.01 *0.57 0.01 0.56 0.01 *0.50 0.01 *0.47 0.02
 Public 0.10 0.01 0.11 0.01 0.11 0.01 0.11 0.01 *0.07 0.01
 No Insurance 0.18 0.01 *0.16 0.01 0.17 0.01 *0.21 0.01 *0.13 0.01
 Other Insurance 0.08 0.01 0.08 0.00 0.07 0.00 0.08 0.01 *0.06 0.01
 Insurance Not Specified 0.08 0.01 0.08 0.01 0.09 0.01 *0.10 0.01 *0.26 0.02

Source: The 2007-2012 National Trauma Data Bank.

*

Significant at the 95% confidence interval.

a

Q1: < 93 minutes; Q2: between 92 and 147 minutes; Q3: between 148 and 231 minutes; Q4: more than 231 minute