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. 2018 May 9;153(9):791–799. doi: 10.1001/jamasurg.2018.1099

Table 2. Multiple Logistic Regression Assessing for Demographic Associations With Correct Tourniquet Application at Retention Testing.

Characteristic Unadjusted Proportion of Correct Tourniquet Application, No. (%) Adjusted Odds Ratio (95% CI) P Value
Age group, y
Older adult (>55) (n = 138) 62 (44.9) 1 [Reference] .02
Middle aged adult (35-55) (n = 107) 64 (59.8) 1.74 (1.02-2.96)
Young adult (18-35) (n = 58) 39 (67.2) 2.35 (1.19-4.64)
Highest level of education
High school or less (n = 72) 41 (56.9) 1 [Reference] .44
Some college education (n = 115) 61 (53.0) 0.88 (0.47-1.64)
Bachelor’s degree (n = 86) 52 (60.5) 1.14 (0.59-2.22)
Advanced degree (n = 29) 11 (37.9) 0.54 (0.22-1.36)
Sex
Female (n = 126) 72 (57.1) 1 [Reference] .55
Male (n = 177) 93 (52.5) 0.86 (0.53-1.40)
Prior first-aid training without hemorrhage control training
No self-reported prior training (n = 142) 78 (54.9) 1 [Reference] .72
Prior self-reported first-aid training (n = 161) 87 (54.0) 1.09 (0.67-1.79)
Training to retention testing, da
Linear effect NA 0.98 (0.95-1.03) .46
Mean (SD) 188.9 (44.5) NA
Quadratic effect NA 1.00 (1.00-1.00) .47
Intervention arm at initial testing
Control (n = 70) 32 (45.7) 1 [Reference] .32
Audio kit (n = 79) 46 (58.2) 1.75 (0.89-3.43)
Flashcards (n = 84) 46 (54.8) 1.58 (0.81-3.08)
B-Con training (n = 70) 41 (58.6) 1.77 (0.88-3.56)

Abbreviations: B-Con, Bleeding Control Basic; NA, not applicable.

a

P = .74 for the overall 2 df test for a trend (linear or quadratic effect) for “days since training retention testing.”