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. 2009 Feb 11;4(2):e4439. doi: 10.1371/journal.pone.0004439

Table 1. Odds of experiencing an adverse drug reaction by ward type*.

Medical/Surgical Specialty Odds ratio (95%CI) in relation to breast/general surgical ward (n = 555) Number of patient episodes
Respiratory 3.65 (2.37 to 5.61) 298
Cardiology 3.34 (2.13 to 5.25) 256
Endocrine 3.19 (2.02 to 5.06) 242
Elderly medicine 3.06 (2.07 to 4.55) 544
Orthopaedic surgery 2.65 (1.81 to 3.90) 711
Rheumatology 2.55 (1.27 to 5.13) 76
Gastrointestinal/ Liver 2.43 (1.58 to 3.73) 390
Pharmacology 1.53 (0.95 to 2.47) 356
Infectious diseases 1.28 (0.75 to 2.20) 267
*

Method used: General Estimating Equation (GEE) model with compound symmetry.

One ward per specialty was assessed, with the exception of elderly medicine and orthopaedic surgery where two wards were assessed.

Odds Ratios adjusted for multilevel structure.