Figure 3From: Psychometric comparison of three behavioural scales for the assessment of pain in critically ill patients unable to self-reportPreference about the use of the three tools, rated by the 20 nurses and the nurse manager. This figure shows that NVPS was the preferred tool, following by the BPS but the difference was not significant compared to the others (P = 0.68 for research and for practice). BPS, Behavioral Pain Scale; NVPS, Non-verbal Pain Scale.Back to article page