Table 1 Interobserver agreement for MTS and ESI, for each hospital and experience level of ED nurses at the MeSpTw, based on the first judgement
Unweighted kappa (95% CI)Quadratic-weighted kappa (95% CI)
MTS (n  =  12)0.76* (0.68 to 0.83)0.82 (0.74 to 0.89)
    MeSpTw (n  =  8)0.85† (0.77 to 0.93)0.87 (0.79 to 0.95)
        <5 years experience0.87 (0.78 to 0.96)0.90 (0.81 to 0.99)
        >5 years experience0.81 (0.71 to 0.91)0.84 (0.73 to 0.95)
    AMC (n  =  4)0.60† (0.48 to 0.73)0.74 (0.63 to 0.85)
ESI (n  =  10)0.46* (0.37 to 0.55)0.73 (0.64 to 0.83)
    OLVG (n  =  6)0.48 (0.38 to 0.57)0.75 (0.65 to 0.84)
    AMC (n  =  4)0.41 (0.30 to 0.53)0.72 (0.61 to 0.83)
  • *Significance level p<0.05, between Manchester Triage System (MTS) and Emergency Severity Index (ESI); †significance level p<0.05, between Medical Spectrum Twente, Enschede (MeSpTw) and Academic Medical Centre, Amsterdam (AMC). ED, emergency department; OLVG, Onze Lieve Vrouwe Gasthuis, Amsterdam.

  • *Significance level p<0.05, between Manchester Triage System (MTS) and Emergency Severity Index (ESI); †significance level p<0.05, between Medical Spectrum Twente, Enschede (MeSpTw) and Academic Medical Centre, Amsterdam (AMC). ED, emergency department; OLVG, Onze Lieve Vrouwe Gasthuis, Amsterdam.