TABLE 1.

The 1- and 6-Month Noninitiation Prevalence by Pharmaceutical Subgroup and Total Number and Proportion of New Prescriptions by Pharmaceutical Subgroup Between July 2017 and June 2018 in Catalonia

Pharmaceutical Subgroups	ATC Code	Prevalence of Noninitiation, %		Prescriptions, na	Proportion of Total Prescriptions, %
		1 mo	6 mo
Drugs used in diabetes
Insulins and analogues for injection, fast acting	A10AB	5.59	2.06	340	0.02
Insulins and analogues for injection, long acting	A10AE	7.77	3.49	373	0.02
Biguanides	A10BA	16.95	7.46	295	0.02
Psycholeptics and psychoanaleptics
Other antipsychotics	N05AX	11.15	6.61	2843	0.18
Benzodiazepine derivatives	N05BA	19.35	18.22	6268	0.41
Nonselective monoamine reuptake inhibitors	N06AA	12.90	9.11	527	0.03
Selective serotonin reuptake inhibitors	N06AB	8.70	5.01	3035	0.20
Other antidepressants	N06AX	10.45	8.86	440	0.03
Centrally acting sympathomimetics	N06BA	9.72	4.63	5081	0.33
Endocrine therapy, gonadotropin releasing hormone analogues	L02AE	5.85	3.31	393	0.03
Drugs for obstructive airway diseases, selective β-2-adrenoreceptor agonists	R03AC	5.82	4.90	106 257	6.90
Symptomatic treatments
Proton pump inhibitors	A02BC	21.46	21.12	14 509	0.94
Propionic acid derivatives	M01AE	10.15	9.50	322 026	20.92
Anilides	N02BE	11.93	11.39	253 133	16.45
Diphenylmethane derivatives	N05BB	15.10	14.82	36 576	2.38
Corticosteroidsb	R01AD	13.24	10.95	42 173	2.74
Substituted alkylamines	R06AB	13.45	13.14	27 525	1.79
Piperazine derivatives	R06AE	15.46	13.88	29 952	1.95
Other antihistamines for systemic use	R06AX	11.46	9.98	63 230	4.11
Other antiallergics	S01GX	11.55	10.34	18 713	1.22
Corticosteroids for systemic use, oral glucocorticoids	H02AB	3.87	3.80	101 416	6.59
Antibacterials for systemic use
Penicillins with extended spectrum	J01CA	2.56	2.54	200 359	13.02
Macrolides	J01FA	3.87	3.85	56 642	3.68
Anti-infectives and corticosteroids by other administration routes
Imidazole and triazole derivatives	D01AC	8.11	7.96	40 188	2.61
Other antifungal agents for topical use	D01AE	11.43	10.43	8833	0.57
Other antibiotics for topical use	D06AX	10.74	10.73	67 651	4.40
Corticosteroids, potent (group III)	D07AC	11.10	10.75	54 772	3.56
Ophthalmic antibiotics	S01AA	8.25	8.18	75 453	4.90
Overall	—	9.01	8.46	1 539 003	100

—, not applicable.

^aThe denominator used to estimate the 1-month and 6-month prevalence of noninitiation.

^bDecongestants and other nasal preparations for topical use.