Results Inter-rater reliability of the NRS and BPS proved to be
adequate (kappa = 0.71 and 0.67, respectively). The level of
agreement within one scale point between NRS rated by thepatient and NRS scored by attending nurses was 73%.
However, high patient scores (NRS ≥4) were underestimated by
nurses (patients 33% versus nurses 18%). In responsive
patients, a high correlation between NRS and VAS was found
(rs = 0.84, P < 0.001). In ventilated patients, a moderate positive
correlation was found between the NRS and the BPS (rs = 0.55,
P < 0.001). However, whereas 6% of the observations were
NRS of greater than or equal to 4, BPS scores were all very low
(median 3.0, range 3.0 to 5.0)
Results Inter-rater reliability of the NRS and BPS proved to beadequate (kappa = 0.71 and 0.67, respectively). The level ofagreement within one scale point between NRS rated by thepatient and NRS scored by attending nurses was 73%.However, high patient scores (NRS ≥4) were underestimated bynurses (patients 33% versus nurses 18%). In responsivepatients, a high correlation between NRS and VAS was found(rs = 0.84, P < 0.001). In ventilated patients, a moderate positivecorrelation was found between the NRS and the BPS (rs = 0.55,P < 0.001). However, whereas 6% of the observations wereNRS of greater than or equal to 4, BPS scores were all very low(median 3.0, range 3.0 to 5.0)
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