Table 3 Kappa coefficients Principal Investigator Expert 1 Expert 2 Expert 3 Expert 4 Expert 5 Kappa .568 .727 .548 .832 .674 Margins proposed by Landis and Koch (1977) Moderate [.4-.6] Good [.6-.8] Moderate [.4-.6] Very Good [.8-1] Good [.6-.8]