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Table 2 Number and type of sources of data by type of method

From: Health workforce metrics pre- and post-2015: a stimulus to public policy and planning

Type of method Basic descriptive and inferential statistics Regression Workforce modelling Total
Number of papers 48 23 15 86
Number of sources used
1 14 (29%) 7 (30%) 0 21
2 15 (31%) 5 (22%) 4 (27%) 24
3 or more 19 (40%) 11 (48%) 11 (73%) 41
Type of source
Primary data collection 7 (15%) 4 (17%) 0 11
Analysis of secondary sources 30 (62%) 18 (78%) 14 (93%) 62
Both 11 (23%) 1 (4%) 1 (13%) 13