Table 2.

GTT studies by country, speciality, and number of hospitals.

	n	Reference number
Country
United States	9	[21, 23, 24, 27–32]
Sweden	2	[10, 26]
Australia	1	[22]
Canada	1	[27]
Denmark	1	[17]
Palestine	1	[25]
Total	15a
Speciality
General inpatients	5 (11,125)	[23–26, 30]
Paediatric	2 (1560)	[28, 29]
Paediatric intensive care unit (PICU)	2 (794)	[21, 22]
Inpatient oncology	1 (88)	[32]
Inpatient psychiatric	1 (8005)	[31]
Intensive care unit (ICU)b	1 (128)	[10]
Neonatal intensive care unit (NICU)	1 (749)	[27]
Unplanned transfer to ICU or death	1 (141)	[17]
Total	16 (22,589)
Number of hospitals
1	6	[10, 17, 22, 24, 26, 32]
2–5	2	[25, 30]
6–10	2	[23, 28]
11–15	3	[21, 27, 29]
>15	1	[31]
Publication year
2006–2010	4	[21, 27, 29, 30]
2011–2015	7	[10, 22–26, 28]
2016–2020	1	[31]
2021–2023	2	[17, 32]

^aOne study [27] took part in two countries so total is greater than number of papers.

^b Nilsson applied the GTT to patients who had died in ICU.