Article Figures & Data
Figures
- Figure 1
Trauma admissions by month and year. ISS, Injury Severity Score.
- Figure 2
Predicted mean monthly admissions by season and mechanism.
Tables
- Table 1
Trauma demographics
Total admissions 8886 Average age, years (range) 44.6 (1–102) Average ISS (range) 11.9 (1–75) LOS, days (range) 5.2 (1–104) N % Gender Male 5923 66.7 Female 2963 33.3 Injury class N (%) Penetrating 864 (9.7) Blunt 8022 (90.3) Mechanism of injury (n=4444) (N, % of total) MVC 1546 (17.4) Falls 1389 (15.6) Falls aged >65 898 (10.1) MCC 430 (4.8) Suicide 181 (2.0) ISS, Injury Severity Score; LOS, length of stay; MCC, motorcycle crashes; MVC, motor vehicle crashes; N, count.
- Table 2
Regression on monthly admissions by season, injury class, and year
Coefficient SE t p Value 95% CI Season (vs Winter)* Spring 6.7 4.4 1.5 0.129 −2.0 to 15.4 Summer 5.6 4.4 1.3 0.205 −3.1 to 14.3 Fall 2.6 4.4 0.6 0.562 −6.2 to 11.3 Injury class (vs Penetrating) Blunt—all seasons 87.2 4.4 19.8 <0.001 78.5 to 95.9 Season/Class (vs Winter/Blunt) Spring/Blunt 5.2 6.2 0.8 0.403 −7.1 to 17.5 Summer/Blunt 22.7 6.2 3.7 <0.001 10.4 to 35.0 Fall/Blunt 21.1 6.2 3.4 0.001 8.7 to 33.4 Year (vs 2013) 2010 14.8 3.8 3.9 <0.001 7.3 to 22.4 2011 14.3 3.8 3.7 <0.001 6.7 to 21.8 2012 6.7 3.8 1.8 0.083 −0.9 to 14.2 2014 7.4 3.8 2.0 0.054 −0.1 to 15.0 2015 12.6 3.8 3.3 0.001 5.0 to 20.1 *Total admissions.
- Table 3
Predicted mean monthly admissions
Mean (95% CI) Season Winter 51.9 (47.5 to 56.2) Spring 61.2 (56.8 to 65.5) Summer 68.8 (64.5 to 73.2) Fall 64.9 (60.6 to 69.3) Class Penetrating 12.0 (8.9 to 15.1) Blunt 111.4 (108.3 to 114.5) Season/Class Winter/Penetrating 8.3 (2.1 to 14.4) Spring/Penetrating 15.0 (8.8 to 21.2) Summer/Penetrating 13.9 (7.7 to 20.0) Fall/Penetrating 10.8 (4.7 to 17.0) Winter/Blunt 95.4 (89.3 to 101.6) Spring/Blunt 107.4 (101.2 to 113.5) Summer/Blunt 123.8 (117.6 to 129.9) Fall/Blunt 119.1 (112.9 to 125.9) Year 2010 67.3 (61.9 to 72.6) 2011 66.7 (61.3 to 72.0) 2012 59.1 (53.8 to 64.4) 2013 52.4 (47.1 to 57.7) 2014 59.8 (54.5 to 65.2) 2015 65.0 (59.7 to 70.3) - Table 4
Predicted mean monthly admissions
Mechanism Season Mean (95% CI) Excess versus reference p Value Suicide Spring 3.3 (1.1 to 5.5) 1.7 0.273 Winter* 1.6 (−0.6 to 3.7) Summer 3.0 (0.8 to 5.2) 1.4 0.358 Fall 2.2 (0.0 to 4.4) 0.7 0.671 MVC Spring* 19.1 (16.9 to 21.2) Winter 22.2 (20.0 to 24.4) 3.2 0.044 Summer 21.4 (19.2 to 23.6) 2.3 0.138 Fall 23.2 (21.0 to 25.4) 4.2 0.008 MCC Spring† 5.7 (3.5 to 7.8) 5.2 0.001 Winter* 0.4 (−1.7 to 2.6) Summer† 11.4 (9.3 to 13.6) 11.0 <0.001 Fall† 6.3 (4.2 to 8.5) 5.9 <0.001 Falls Spring 18.2 (16.0 to 20.3) 0.5 0.75 Winter† 22.5 (20.3 to 24.7) 4.8 0.002 Summer* 17.7 (15.5 to 19.8) Fall 18.8 (16.7 to 21.0) 1.2 0.458 Falls>65 Spring 11.5 (9.3 to 13.7) 0.1 0.972 Winter 15.3 (13.2 to 17.5) 3.9 0.014 Summer* 11.4 (9.3 to 13.6) Fall 11.6 (9.4 to 13.8) 0.2 0.915 *Represents reference.
†Represents significance.
MCC, motorcycle crashes; MVC, motor vehicle crashes.
Seasonal Variation of Trauma in Western Massachusetts: Fact or Folklore?
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