Table 3 Inter-observer reliability measured by weighted kappa coefficients for each of the three pain tools

Total score

Total score

Total score

0.81 (0.03)^a

0.81 (0.03)^a

0.71 (0.04)

Facial domains

Face

Face

Face

0.75 (0.03)

0.81 (0.03)^a,c

0.70 (0.04)^d

Breathing domains

Ventilation/vocalisation

Ventilation/vocalisation

Respiration

0.78 (0.04)^a

0.71 (0.05)^a,c

0.54 (0.07)^e

Muscular domains

Upper limbs

Body movements

Activity

0.61 (0.06)

0.42 (0.07)^b

0.52 (0.06)

Muscle tension

Guarding

0.43 (0.07)^b

0.32 (0.07)^b

Physiological domains

Physiological I

0.46 (0.08)

Physiological II

0.02 (0.03)^f