TABLE 2.

Results of the decomposition analysis by the major classes of medicines. Minas Gerais, Brazil, 2012-2018.

Major classes of medicines a	Drug price effects (P)	Volume effects (V)	Drug-mix effects (D)	Expenditure index (E) b
A—alimentary tract and metabolism	1.37	0.65	1.39	1.23
B—blood and blood-forming organs	1.31	0.94	1.59	1.97
C—cardiovascular system	0.98	0.66	1.55	1.01
D—dermatologicals	1.13	0.49	2.65	1.47
G—genito-urinary system and sex hormones	0.22	0.02	38.69	0.15
H—systemic hormonal preparations, excl. Sex hormones and insulins	1.33	1.40	0.88	1.65
J—anti-infectives for systemic use	1.65	0.69	1.09	1.25
M—musculo-skeletal system	1.17	0.66	1.16	0.91
N—nervous system	1.36	0.74	1.31	1.32
P—anti-parasitic products, insecticides, and repellents	1.18	0.56	1.42	0.94
R—respiratory system	1.18	0.85	1.12	1.13
S—sensory organs	1.10	0.58	0.70	0.45
V—various	0.53	2.23	0.89	1.05
TOTAL	1.20	0.70	1.41	1.18

^aATC, first level.

^bE = P x V x D = $\frac{{\displaystyle \sum P_1{V}_0}}{{\displaystyle \sum P_0{V}_0}}X\frac{{\displaystyle \sum V_1}}{{\displaystyle \sum V_0}}X\frac{\left({\displaystyle \sum P_1{V}_1}/{{\displaystyle \sum V}}_1\right)}{\left({\displaystyle \sum P_1{V}_0}/{\displaystyle \sum V_0}\right)}$