From: Evaluation of clinical efficacy and safety of cervical trauma collars: differences in immobilization, effect on jugular venous pressure and patient comfort
P-values of comparisons
Collar type
Mean degree of comfort
Range of comfort
Vista
Miami J
Stifneck
Philadelphia
4.2 ± 0.8
3 - 5
3.9 ± 1.0
2 - 5
0.55
2.8 ± 1.0
0.007
0.031
2.2 ± 0.8
1 - 3
< 0.001
0.002
0.27
-