Table 2. Comparison of most frequently prescribed CAPS medication subgroups, non-ID group versus ID group. Top 10 CAPS medication subgroups ranked by frequency

Medication subgroup	Medication subgroup rank for ID group (age–sex standardised)	Medication subgroup rank for non-ID group
Antipsychotics^a	1	36
Anticonvulsants^a	2	37
Broad spectrum penicillins	3	2
Immunisation	4	14
Antidepressants	5	4
Simple analgesics	6	10
Penicillins or cephalosporins	7	3
Antiulcerants	8	9
Sex or anabolic hormones	9	23
Other antibiotics^a	10	8
Antihypertensives^a	18	1
Other cardiovascular system^a	13	5
NSAIDs^a	38	6
Narcotic analgesics^a	20	7

^aNon-overlapping 95% confidence intervals, comparing age–sex standardised ID with non-ID group.
ID = intellectual disability. NSAID = non-steroidal anti-inflammatory drug.