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. 2011 Sep 2;19(1):72–78. doi: 10.1136/amiajnl-2011-000332

Table 2.

Observation characteristics of study

No of patients 73
Male (%) 64.4
Age, median (p25–p75) 63 (51–75)
Total no of OE 2314
Median (range) OE per patient during the observational session (p25–p75) 7 (5–9)
Total no of different drugs ordered 213
Anatomical Therapeutic Chemical medication class no (%)
 Gastrointestinal 857 (37.0)
 Anti-infective agents 297 (12.8)
 Blood 286 (12.4)
 Cardiovascular 230 (9.9)
 Respiratory 171 (7.4)
 Neurological 171 (7.4)
 Antineoplastic and immunomodulating agents 116 (5.0)
 Musculoskeletal 73 (3.2)
 Hormones 57 (2.5)
 Various 27 (1.2)
 Gynecological 15 (0.6)
 Dermatological 6 (0.3)
 Antiparasitic agents 8 (0.3)
No (%) of OE per administration route
 Oral 1560 (67.4)
 Intravenous 402 (17.4)
 Inhaled 125 (5.4)
 Subcutaneous 121 (5.2)
 Continuous intravenous perfusion 71 (3.1)
 Transdermal 17 (0.7)
 Rectal 9 (0.4)
 Topical 6 (0.3)
 Intramuscular 2 (0.1)
 Enteral catheter 1 (0.004)
No (%) of observations
 Morning 1134 (49.0)
 Evening 1018 (44.0)
 Night 162 (7.0)
Weekend observations (%) 33.8
No (%) of observations
 Pharmacist 57.3
 Nurse 42.6

OE, opportunities for error, defined as the sum of observed administrations and omitted medications.