Page 38 - JSOM Winter 2023

FIGURE 3 Times from Touching the Tightening System to Occlusion.
st
st
(A) "Touch tightening" to "1 occlusion" (seconds) (B) "1 occlusion" to "last
occlusion" (seconds) 60 80
50
200
300
10
100
50
25
20
15
30
45
40
35
0
5
4
40
6
10
20
8
10
2
0
Good understanding
Good understanding
Bad understanding n=2
Bad understanding
Good mechnical
Good mechnical
Bad mechanical
Bad mechanical
CAT7
SOFTTW3 CAT7
Tight strap SOFTTW5 SOFTTW3
Good understanding TMT Tight strap SOFTTW5
Good mechanical OMT Good understanding TMT
X8T Good mechanical OMT
Tac RMT X8T
RST Tac RMT
RST
Loose strap
Good understanding Loose strap
Good mechanical Good understanding
Good mechanical
Tight strap
Tight strap
Good understanding Good understanding
Bad mechanical
Bad mechanical
Loose strap
Loose strap
Good understanding Good understanding
Bad mechanical
Bad mechanical
A video orientation for the graphs can be accessed at https://vimeo.com/799936785. • SOFTTW5 p=.0001 Good mechanical (n=44) versus Bad mechanical (n=13),
The x-axis has application processes and process quality (good/bad) for processes p=.076 Tight strap Good understanding Good mechanical (n=34) versus Loose
that occur between touching the tightening system after achieving a secured strap strap Good understanding Good mechanical (n=10)
to reaching occlusion. Symbols for applications with the good version of the indi- • TMT p=.033 Good mechanical (n=38) versus Bad mechanical (n=15); p=.138
cated processes have open circles. Symbols for applications with a bad version have Tight strap Good understanding Bad mechanical (n=4) versus Loose strap Good
downward-pointing open triangles. The colors on the graphs are linked with the understanding Bad mechanical (n=11)
tourniquets as follows: CAT7 = gray, SOFTTW3 = red, SOFTTW5 = orange, TMT • OMT p<.0001 Good understanding (n=54) versus Bad understanding (n=2)
= magenta, OMT = dark blue, X8T = dark green, Tac RMT = light green, RST = • X8T p<.0001 Good understanding (n=48) versus Bad understanding (n=2)
lavender. The “n=2” at the top of one CAT7 column indicates two applications • Tac RMT p=.039 Tight strap Good understanding Good mechanical (n=19)
with event failures and the corresponding time assignments for the process of 300 versus Loose strap Good understanding Good mechanical (n=34)
seconds. Times and p-values are for applications with good orientation when the • RST p<.0001 Good understanding (n=54) versus Bad understanding (n=3).
strap was secured (good orientation defined as the video-shown orientation 2-10 with (B) Time differences from “touch tightening system” to “first occlusion” versus
the redirect buckle lateral and the tightening system located above the redirect). “touch tightening system” to “last occlusion”. P-values for time comparisons from
(A) Times from “touch tightening system” to “first occlusion”. P-values for time “touch tightening system” to “last occlusion” between each of the tourniquets are
comparisons between each of the tourniquets are as follows: as follows:
• Good understanding (of the tightening system); n=424; p<.040 RST versus • Good understanding (of the tightening system), n=424, p<.030 TMT versus
CAT7, SOFTTW5, and OMT; p<.020 Tac RMT versus CAT7 and SOFTTW5; CAT7 and OMT; p<.050 SOFTTW3 versus CAT7 and OMT
p=.084 Tac RMT versus OMT; p=.014 TMT versus CAT7; p=.078 TMT versus • Good mechanical (no windlass rod slipping, windlass rod resetting, tooth skipping,
SOFTTW5 or buckle advance failures); n=377; p<.030 RST versus CAT7, SOFTTW3,
• Good mechanical (no windlass rod slipping, windlass rod resetting, tooth SOFTTW5, and OMT; p=.146 RST versus TMT
skipping, or buckle advance failures); n=377; p<.030 RST versus CAT7, • Good understanding and Good mechanical combined; n=368; p=.041 X8T
SOFTTW3, SOFTTW5, TMT, and OMT; p=.079 and 0.074 Tac RMT versus versus CAT7; p=.124 X8T versus SOFTTW5; p<.040 Tac RMT versus CAT7,
CAT7 and SOFTTW5; p=.107 and 0.100 X8T versus CAT7 and SOFTTW5 SOFTTW3, SOFTTW5, and OMT; p<.009 RST versus CAT7 and SOFTTW5;
• Good understanding and Good mechanical combined; n=368; p<.008 X8T p=.054 RST versus SOFTTW3; p=.084 RST versus OMT
versus CAT7 and OMT; p<.020 Tac RMT versus CAT7, SOFTTW3, SOFTTW5, • Tight strap Good understanding Good mechanical, n=195, p=.107 X8T versus
and OMT; p<.050 RST versus CAT7, SOFTTW3, SOFTTW5, and OMT CAT7; p=.082 X8T versus SOFTTW5; and p=.092 X8T versus TMT
• Tight strap Good understanding Good mechanical, n=195, p<.040 X8T versus • Loose strap Good understanding Good mechanical, n=174, p=.089 Tac RMT
CAT7 and SOFTTW5; p=.148 and 0.110 X8T versus SOFTTW3 and TMT; versus SOFTTW3; p=.148 RST versus SOFTTW3.
p=.095 and 0.078 Tac RMT versus CAT7 and SOFTTW5 P-values for time comparisons within a specific tourniquet are as follows:
• Loose strap Good understanding Good mechanical; n=174, p=.061 Tac RMT • CAT7 p<.0001 Good understanding (n=50) versus Bad understanding (n=5)
versus SOFTTW3; p=.109 RST versus SOFTTW3. • SOFTTW3 p<.0001 Good understanding (n=56) versus Bad understanding
P-values for time comparisons within a specific tourniquet are as follows: (n=1), Good mechanical (n=47) versus Bad mechanical (n=9)
• CAT7 p<.0001 Good understanding (n=50) versus Bad understanding (n=5) • SOFTTW5 p<.0001 Good mechanical (n=44) versus Bad mechanical (n=13)
• SOFTTW3 p<.001 Good understanding (n=56) versus Bad understanding (n=1), • TMT p<.0001 Good mechanical (n=38) versus Bad mechanical (n=15)
Good mechanical (n=47) versus Bad mechanical (n=9), and Tight strap Good • OMT p<.0001 Good understanding (n=54) versus Bad understanding (n=2)
understanding Bad mechanical (n=3) versus Loose strap Good understanding • X8T p<.0001 Good understanding (n=48) versus Bad understanding (n=2)
Bad mechanical (n=6) • Tac RMT p=.039 Tight strap Good understanding Good mechanical (n=19)
versus Loose strap Good understanding Good mechanical (n=34)
• RST p<.0001 Good understanding (n=54) versus Bad understanding (n=3).
36 | JSOM Volume 23, Edition 4 / Winter 2023