Table 2 Country and setting in reviewed studies

United States of America

[4, 6, 60, 61, 62*, 63, 64, 65*, 67, 68, 69*, 70–73, 74*, 75, 76, 77*, 78–81, 82*, 83–87]

Intensive Care Units

[4, 35, 40, 58, 59, 61–66]

Not specified

[66]

Medical and surgical Units

[1, 4, 34, 35, 40, 45, 46, 48],[58, 59, 62, 64, 66–70]

United Kingdom

[34–41]

Oncology Units

[1, 34, 41, 50, 58, 59, 62, 64],[65, 84]

Australia

[42–46]

Maternity Units

[1, 58, 59, 62, 66, 67, 71]

The Netherlands

[47–51]

Cardiovascular Units

[1, 34, 40, 45, 50, 53, 58, 59],[66]

Canada

[52–54]

Operating Theatre

[38, 52, 62, 72, 77]

Canada and United States

[1, 24*, 58, 59*]

Emergency and trauma Units

[35, 57, 58, 62, 73–75]

Japan

[55]

Psychiatry Units

[66]

Lebanon

[56*]

Long term care Units

[6, 84]

Thailand

[57]

Neurology Units

[46, 51, 78]

Pediatrics

[35, 40, 53, 54, 58, 59, 63–66, 71],[77]

Other

[40, 46, 51]

Veteran Affairs Medical Centers/Hospitals

[6, 76, 80, 81, 84]

Community Hospitals

[1, 58, 59, 62, 72, 79]

Tertiary Hospitals

[58, 64, 67]

Teaching/University/Academic Hospitals

[1, 34, 46, 48, 49, 52–54, 56, 58],[59, 64, 67, 68, 71, 75, 77–79, 82],[84]

Non Academic/Non Teaching Hospitals

[34, 40, 58, 72]