Table 1: Medline search strategy and number of articles found on 17/01/2015.

# Searches Results
1 exp Nursing Staff/ 34106
2 exp Nursing Care/ 58119
3 exp Nurses/ 42050
4 (nurse or nurses or nursing).tw. 176170
5 1 or 2 or 3 or 4 229957
6 exp Personnel Turnover/ 2974
7 ((turnover adj3 (nurse or nurses or nursing)) or ((work or working or workload) adj3 (nurse or nurses or nursing)) or (leaving adj3 (nurse or nurses or nursing)) or (retention adj3 (nurse or nurses or nursing)) or (retain adj3 (nurse or nurses or nursing)) or (stay adj3 (nurse or nurses or nursing))).tw. 10391
8 6 or 7 12673
9 Job Satisfaction/ and (turnover* or leave or leaving or retention or retain or stay or staying).tw. 2220
10 Burnout/ and (turnover* or leave or leaving or retention or retain or stay or staying).tw. 644
11 Personnel Management/ and (turnover* or leave or leaving or retention or retain or stay or staying).tw. 379
12 Workload/ and (turnover* or leave or leaving or retention or retain or stay or staying).tw. 1018
13 ((burnout or morale or stress) adj5 (turnover* or leave or leaving or retention or retain or stay or staying)).tw. 949
14 ((economic* or financial or pay*) adj5 (turnover* or leave or leaving or retention or retain or stay or staying)).tw. 672
15 (job satisfaction adj5 (turnover* or leave or leaving or retention or retain or stay or staying)).tw. 421
16 ((work or working or workload) adj5 (turnover* or leave or leaving or retention or retain or stay or staying)).tw. 2002
17 (organization* adj5 (turnover* or leave or leaving or retention or retain or stay or staying)).tw. 585
18 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 6758
19 8 or 18 17664
20 (incentive* or intervention* or strateg*).tw. 885703
21 (meta anal$ or metaanal$).ti,ab,sh. 77150
22 ((methodol$ or systematic$ or quantitativ$) adj3 (review$ or overview$ or survey$)).ti,ab,sh. 63670
23 (medline or embase or index medicus).ti,ab. 57545
24 ((pool$ or combined or combining) adj (data or trials or studies or results)).ti,ab. 10785
25 literature.ti,ab. 352373
26 21 or 22 or 23 or 24 or 25 456788
27 26 and review.pt,sh. 217357
28 5 and 19 and 20 and 27 176
29 limit 28 to english language 165