Table 2

Results of statistical analysis

Negative Quick score=0Moderately positive Quick score=1–5Strongly positive Quick score=6–7
HospitalObserved (expected)Observed (expected)Observed (expected)Total
Numbers of observed cases in each of three levels of oestrogen receptor (ER) positivity on tumours processed in each of seven hospitals. Expected values are calculated based on the proportions of cases in all cases submitted (ER negative, 19; ER moderate, 104; ER strong, 297). The κ2 values for each cell are shown, allowing identification of those results contributing most to the overall κ2 value.
13 (6.15)30 (33.68)103 (96.17)136
23 (1.18)4 (6.44)19 (18.39)26
34 (226)14 (12.38)32 (35.36)50
41 (1.09)7 (5.94)16 (16.97)24
50 (1.36)8 (7.43)22 (21.21)30
61 (2.99)18 (16.34)47 (46.67)66
77 (3.98)23 (21.79)58 (62.23)88
Total κ219104297420
HospitalNegativeModerately positiveStrongly positive
Quick score=0Quick score=1–5Quick score=6–7
11.615+0.401+0.485
22.828+0.923+0.021
31.336+0.212+0.319+
40.007+0.188+0.056+
51.357+0.044+0.029+
61.321+0.168+0.002+
72.290+0.067+0.287+
Total κ2=13.995; degrees of freedom, 12; p=0.304