Table 4. . The median (25–75 percentiles) number of drugs and drug–drug interactions in the Danish and the FDA databases in the four different age groups.

Age (years)	Number of drugs	DDI (Danish database)	DDI (FDA database)
65–74	8 (6.5–9.5)	1 (0–4)	6 (4–9.5)
75–84	9 (8–11)	2 (1–4)	7.5 (4–13.75)
85–94	7 (6–9)	1.5 (0.25–3)	5 (2.25–7)
95+	7 (6–9)	1 (1–1)	4 (1–7)

DDI: Drug–drug interaction.