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Table 2 Bivariate correlation between the items in the preliminary Early Detection of Infection Scale (EDIS; twelve statements measuring changes in signs and symptoms and one temperature item

From: Nursing assistants: “He seems to be ill” – a reason for nurses to take action: validation of the Early Detection Scale of Infection (EDIS)

“There is a change in the patient’s…” Confusion Aggressiviness Infirmity/ Apathy Unrestrained behaviour Restlessness Changed appetite Pain General signs & symptoms of illness Expression (of illness) in the eyes Urinary tract symptoms Respiratory symptoms Symptoms of wound infection Temperature
Confusiona 1.00 0.44* 0.00 0.38* 0.48* 0.02 −0.08 −0.31* −0.25* 0.22 −0.09 0.36* −0.18
Aggressivenessa 0.44* 1.00 −0.01 0.62* 0.45* −0.06 0.07 −0.29* −0.27* 0.34* −0.13 0.20 −0.16
Infirmity/ Apathya 0.00 −0.01 1.00 −0.05 −0.01 0.35* 0.11 0.32* 0.51* 0.04 0.17 0.26* 0.12
Unrestrained behaviour a 0.38* 0.62* −0,05 1.00 0.44* −0.12 0.10 −0.25* −0.29* 0.23 −0.32* 0.15 −0.20
Restlessnessa 0.48* 0.45* −0.01 0.44* 1.00 −0.15 0.10 −0.43* −0.21 0.27* −0.14 0.22 −0.29*
Changed apetitea 0.02 −0.06 0.35* −0.12 −0.15 1.00 0.15 0.22 0.13 −0.12 0.18 0.19 0.04
Paina −0.08 0.07 0.11 0.10 0.10 0.15 1.00 0.19 −0.08 0.18 −0.05 −0.05 −0.19
General signs & symptoms of illnessa −0.31* −0.29* 0.32* −0.25* −0.43* 0.22 0.19 1.00 0.19 −0.31* 0.44* −0.09 0.47*
Expression (of illness) in the eyesa −0.25* −0.27* 0–51* −0.29* −0.21 0.13 −0.08 0.19 1.00 −0.05 0.18 0.15 0.12
Urinary tract symptomsa 0.22 0.34* 0–04 0.23 0.27* −0.12 0.18 −0.31* −0.05 1.00 −0.14 0.24 −0.10
Respiratory symptomsa −0.09 −0.13 0.17 −0.32* −0.14 0.18 −0.05 0.44* 0.18 −0.14 1.00 0.04 0.34*
Symptoms of nfectiona 0.36* 0.20 0.26* 0.15 0.22 0.19 −0.05 −0.09 0.15 0.24 0.04 1.00 0.14
Temperature °C −0.18 −0−16 0.12 −0.20 −0.29* 0–04 −0–19 0.47* 0.12 −0.10 0.34* 0.14 1.00
Number of other statements significantly correlating to respectively statement/temperature 6 6 4 6 6 1 0 8 4 3 3 2 3
  1. *p < 0.05; non-parametric correlation; two-tailed
  2. aResponse alternatives: Completely agree -Partly agree -Do not agree