Table 3.

Overall and influenza-associated annual antibiotic prescribing rates per 1000 in different age groups of younger/middle-aged adults, as well as prescribing for respiratory diagnoses without a bacterial indication, 2010–2018

Age (y)/Rate	Overall annual prescribing per 1000	Flu-associated annual prescribing per 1000	Percent of prescribing that is flu-associated	Respiratory diagnoses without a bacterial indication, annual prescribing per 1000	Respiratory diagnoses without a bacterial indication, annual flu-associated prescribing per 1000	Percent of prescribing that is flu-associated
18–19	563	13.2 (7–19.6)	2.4% (1.3–3.5)	68.6	2.5 (1.6–3.4)	3.7% (2.4–5)
20–24	526	7.5 (5.3–9.7)	1.4% (1–1.8)	62.5	2 (1.3–2.7)	3.2% (2.1–4.4)
25–29	556	4.1 (2.5–5.5)	0.7% (0.5–1)	73.3	2 (1.1–2.9)	2.7% (1.4–4)
30–34	560	4.5 (2.9–5.9)	0.8% (0.5–1.1)	86.8	2.4 (1.2–3.6)	2.8% (1.4–4.2)
35–39	567	5.6 (4–7.2)	1% (0.7–1.3)	97.3	4.1 (3.1–5.1)	4.2% (3.1–5.3)
40–44	560	8 (5.6–10.2)	1.4% (1–1.8)	97.4	4.6 (3.5–5.7)	4.7% (3.6–5.8)
45–49	571	7.1 (5.3–8.8)	1.2% (0.9–1.5)	96.6	6 (4.6–7.4)	6.2% (4.8–7.7)
50–54	609	8.8 (6.5–10.9)	1.4% (1.1–1.8)	101.6	5.8 (4.5–7.1)	5.7% (4.4–7)
55–59	658	10.1 (7.7–12.3)	1.5% (1.2–1.9)	108.7	6.5 (5.1–7.9)	6% (4.7–7.3)