Examining clinician choice to follow-up (or not) on automated notifications of medication non-adherence by clinical decision support systems

Table 5 Medication type × follow-up status chi-squared test of homogeneity

Prescription Type	N. Flags	%	N. Followed-up (Expected Count)	N. Not Followed-up (Expected Count)
Mood stabilisers	21	6	5 (4.64)	16 (16.35)
Anti-psychotics	102	31	37 (22.55)	65 (79.45)
Anxiolytics	50	15	2 (11.06)	48 (38.94)
Anti-depressants	130	39	23 (28.76)	107 (101.25)
Totals	331		71	260
χ² (p)				22.9121 (< .001)

As only one cell has an expected count < 5 (ie., 12.5% of cells), and χ² > 7.82 (the critical χ² value for tests with three degrees of freedom), therefore the assumptions of the test are met [88–90]

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