Table 2 Percentage of population (65 years and older) using medicines, in function of the anatomical groupsa (ATC_1), according to polypharmacy status (N = 2835), Belgium, 2008
From: Factors associated with excessive polypharmacy in older people
ATC_1 | Total | 0–4 medicines (N = 1769) | 5–8 medicines (N = 811) | > = 9 medicines (N = 255) | |||||
|---|---|---|---|---|---|---|---|---|---|
% | 95 % CI | % | 95 % CI | % | 95 % CI | % | 95 % CI | ||
C | Cardiovascular system | 61.9 | 59.1–64.7 | 46.6 | 43.1–50.2 | 92.2 | 89.5–94.9 | 95.3 | 91.7–98.8 |
N | Nervous system | 37.6 | 34.7–40.6 | 21.2 | 18.3–24.0 | 65.9 | 61.0–70.7 | 86.5 | 79.6–93.3 |
A | Alimentary tract and metabolism | 33.5 | 30.7–36.4 | 18.3 | 15.5–21.2 | 56.5 | 51.3–61.7 | 88.0 | 82.7–93.3 |
B | Blood and blood forming organs | 31.2 | 28.5–34.0 | 17.2 | 14.5–19.9 | 54.9 | 49.8–59.9 | 74.3 | 65.7–82.9 |
M | Musculo-skeletal system | 18.1 | 15.7–20.5 | 11.5 | 9.0–14.0 | 25.2 | 20.7–29.7 | 50.6 | 38.5–62.7 |
R | Respiratory system | 12.1 | 9.9–14.3 | 5.1 | 3.5–6.6 | 20.8 | 16.1–25.5 | 42.9 | 29.6–56.2 |