Table 2. Use of medicine according to sociodemographic characteristics, socioeconomic status, and health conditions in São Paulo, Brazil, in 2003 and 2015.

	Use of medicine in 2003			Use of medicine in 2015
	n	% (95% CI)	p-value	n	% (95% CI)	p-value
Age, years			<0.001			<0.001
20-39	179	38.99 (33.98-44.25)		542	45.53 (42.10-49.01)
40-59	145	52.01 (45.42-58.53)		630	63.41 (59.67-66.99)
≥60	613	74.40 (70.21-78.19)		844	84.39 (81.22-87.11)
Sex			<0.001			<0.001
Male	382	37.99 (32.69-43.59)		703	49.06 (45.91-52.22)
Female	555	57.75 (52.64-62.70)		1313	67.63 (64.32-70.76)
Ethnicity			0.0060			0.0002
White	651	53.13 (47.61-58.58)		432	53.41 (49.22-57.55)
Non-white	284	39.79 (33.14-46.85)		526	64.97 (60.57-69.13)
Years of study			0.0595			<0.001
0-7	604	51.27 (46.26-56.26)		642	70.14 (66.73-73.97)
8-11	207	43.01 (36.78-49.46)		923	53.36 (50.50-56.20)
≥12	116	53.55 (44.55-62.34)		439	61.93 (57.05-66.59)
Income (minimum wage)			0.0655			0.0061
≤1	380	46.60 (41.31-51.96)		503	65.59 (61.65-69.23)
1>2	240	43.16 (36.77-49.78)		569	55.13 (50.99-59.19)
2<5	209	51.76 (44.06-59.39)		541	57.49 (53.23-61.63)
≥5	108	58.41 (46.64-69.28)		267	61.09 (54.83-67.00)
Chronic disease			<0.001			<0.001
No	145	27.45 (22.46-32.44)		278	29.92 (26.21-33.92)
Yes	792	76.68 (72.55-80.52)		1738	73.20 (70.78-75.49)
Acute disease			<0.001			<0.001
No	610	40.81 (36.07-45.73)		1463	53.53 (50.9-56.14)
Yes	327	69.5 (63.5-74.91)		551	82.50 (78.74-85.72)