Table 6
Deriving the overall χ
2
statistic for the study
Misdiagnosis
Waiting time
Communication
Other
Observed (O)
25
15
10
10
Expected (E)
9
36
6
9
O − E
16
−21
4
1
(O − E)
2
256
441
16
1
(O − E)
2
/ E
28.4
12.25
2.67
0.11