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. Author manuscript; available in PMC: 2020 May 1.
Published in final edited form as: Am J Prev Med. 2019 Mar 6;56(5):639–647. doi: 10.1016/j.amepre.2018.12.009

Table 2.

ED Visits Due to Nonmedical Use of Pharmaceuticals, by Category, 2016a

Category Implicated alone or with other substancesb Implicated alone without other substancesc
Annual national estimated Annual national estimatee
n % total visits (95% CI) n % total visits (95% CI) % category (95% CI)
Benzodiazepines 167,845 46.9 (42.5, 51.2) 23,335 6.5 (5.1, 7.9) 13.9 (10.9, 16.9)
Prescription opioids 129,863 36.2 (30.8, 41.7) 40,499 11.3 (8.6, 14.0) 31.2 (26.2, 36.1)
Antidepressants 24,350 6.8 (5.5, 8.1) 6,015 1.7 (1.1, 2.3) 24.7 (18.7, 30.7)
Cough/cold or antihistamines 23,966 6.7 (5.8, 7.6) 9,675 2.7 (2.0, 3.4) 40.4 (32.2, 48.5)
Nonopioid analgesics 23,758 6.6 (5.4, 7.9) 12,391 3.5 (2.6, 4.3) 52.2 (45.5, 58.8)
Hypnotics (non-benzodiazepine) 16,899 4.7 (3.8, 5.7) 2,374 0.7 (0.4, 1.0) 14.1 (7.8, 20.3)
Antipsychotics 15,874 4.4 (3.4, 5.5) 4,995 1.4 (1.0, 1.8) 31.5 (25.6, 37.3)
Muscle relaxants 14,731 4.1 (3.2, 5.0) 3,114 0.9 (0.5, 1.2) 21.1 (13.4, 28.9)
Gabapentinoids 11,669 3.3 (2.3, 4.2) ~ ~ ~
Stimulants 10,999 3.1 (1.8, 4.4) 3,677f 1.0 (0.4, 1.7) 33.4 (22.1, 44.8)
Antihypertensives 7,824 2.2 (1.6, 2.8) 2,958 0.8 (0.5, 1.1) 37.8 (25.6, 50.0)
Anticonvulsants 4,828 1.3 (0.9, 1.8) 1,966f 0.5 (0.2, 0.8) 40.7 (24.0, 57.4)
Antibiotics 4,278 1.2 (0.8, 1.6) 2,915 0.8 (0.5, 1.2) 68.1 (50.8, 85.5)
Other pharmaceuticalsg 16,775 4.7 (3.9, 5.4) 6,978 1.9 (1.5, 2.4) 41.6 (33.1, 50.1)
Total 358,247 100 (N/A) 122,195 34.1 (30.5, 37.7) N/A
a

Estimates are from the National Electronic Injury Surveillance System–Cooperative Adverse Drug Event Surveillance project, CDC. Estimates based on <20 cases or total estimates <1,200 are considered statistically unstable and are not shown (~).

b

Implicated alone or in combination with other pharmaceuticals, alcohol, unspecified drugs, or illicit substances.

c

Implicated alone, without other categories of pharmaceuticals, and without alcohol, unspecified drugs, or illicit substances.

d

Annual estimates and percentages total more than 100% because a single visit may involve multiple pharmaceuticals from different categories.

e

Annual estimates and percentages total less than 100% because additional visits involve pharmaceuticals from different categories and additional visits involve alcohol or illicit substances.

f

Coefficient of variation >30%.

g

Other pharmaceuticals includes the following: vitamin and/or mineral supplements (n=32 cases), hypoglycemic agents (21 cases), neurologic agents (e.g., antiparkinsonian medications) (19 cases), gastrointestinal agents (e.g., laxatives, antispasmodics [e.g., loperamide], antacids) (14 cases), genitourinary agents (e.g., erectile dysfunction medications) (13 cases), endocrine/hormone agents (12 cases), anticoagulants/antiplatelets (9 cases), antirheumatics (8 cases), antivirals (4 cases), antigout agents (3 cases), analgesic supplement (e.g., kratom) (2 cases), and unspecified prescription or over-the-counter medications (117 cases).

ED, emergency department; N/A, not applicable.