. 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)	Q1^a		Q2^a		Q3^a		Q4^a		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.

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