Table
3: Agreement between VRS and NRS using
various cut-off points to obtain their equivalence of mild, moderate and severe
pain categories on VRS.
|
Verbal Rating Scale |
Numerical Rating Scale (Serlin et al. cut-off points) |
Kappa coefficient |
% agreement between VRS and NRS |
χ2 ; (df); p-value |
||
|
|
1–4 (Mild) |
5 - 6
(Moderate) |
7-10
(Severe) |
|
|
3.995
(4); 0.407 |
|
Mild |
43
(84.3%) |
7 |
1 |
|
81.4 |
|
|
Moderate |
34 |
79
(59.8%) |
19 |
0.61 |
||
|
Severe |
0 |
0 |
53
(100.0%) |
|
||
|
Numerical Rating Scale (Jessen et al. cut-off points) |
||||||
|
|
1-3 (Mild) |
4-6
(Moderate) |
7-10
(Severe) |
|
|
|
|
Mild |
36
(70.6) |
14 |
1 |
|
82.6 |
|
|
Moderate |
11 |
102
(77.3) |
19 |
0.69 |
|
|
|
Severe |
0 |
0 |
53
(100.0) |
|
|
|
|
Numerical Rating Scale (Paul et al.
cut-off points) |
||||||
|
|
1-4 (Mild) |
5-7
(Moderate) |
8-10
(Severe) |
|
|
|
|
Mild |
43
(84.3) |
7 |
1 |
0.64 |
80.4 |
|
|
Moderate |
34 |
95
(72.0) |
3 |
|
|
|
|
Severe |
0 |
8 |
45
(84.9) |
|
|
|