Table 3.

Level of evidence and quality analysis of data for prospective randomized trials with section raw scores, overall scores and percentages (n= 2)

	Title and abst.	Bgd.	Des.	Partic.	Int.	Outc.	Sp. sz.	Seq.	Alloc.	Imp.	Bld.	Stat. mtd.	Part. flow	Recru.	Basel. data	No. anal.	Outc. and estim.	Anc. anal.	Hms.	Lim.	Gen.	Inter.	Oth.	n/N
																								%
Landrigan et al. [16] (CWS) Level 2	1/2	2/2	1/2	2/2	1/1	1/2	1/2	0/2	0/1	1/1	1/2	2/2	1/2	1/2	1/1	1/1	0/2	1/1	1/1	1/1	1/1	1/1	3/3	25/37
																								68%
Rothschild et al. [18] (IS) Level 2	1/2	2/2	1/2	2/2	1/1	1/2	0/2	2/2	0/1	1/1	1/2	2/2	1/2	2/2	1/1	1/1	0/2	1/1	1/1	1/1	1/1	1/1	3/3	27/37
																								73%

Note. For levels of evidence, level 1 refers to systematic reviews of randomized controlled trials, level 2 refers to randomized trials, or observational studies with dramatic effects, level 3 refers to a non-randomized controlled cohort, follow-up study, level 4 refers to case series, case-control studies or historically controlled studies and level 5 refers to mechanism-based reasoning. CWS refers to changes in work schedules and IS refers to intravenous systems. The following abbreviations were used in the table: Title and abst., Title and abstract; Bgd., Background; Des., Design; Partic., Participants; Int., Interventions; Outc., Outcomes; Sp. sz., Sample size; Seq., Sequence generation; Alloc., Allocation; Imp., Implementation; Bld., Blinding; Stat. mtd., Statistical methods; Part. flow, Participant flow; Recru., Recruitment; Basel. data, Baseline data; No. anal., Numbers analyzed; Outc. and estim., Outcomes and estimation; Anc. anal., Ancillary analyses; Hms., Harms; Lim., Limitations; Gen., Generalizability; Inter., Interpretation; Oth., Other information, including registration, protocol, and funding.