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Table 2 Risk of bias table: modified Newcastle Ottowa

From: A systematic review of strategies to recruit and retain primary care doctors

  Author and year Representativeness of intervention group (selection bias) Control group Representativeness of control group (selection bias) Comparability of intervention and control group Adequate assessment of outcome Adequate follow-up Reporting Generalizability Conflicts of interest
1 Lockyer L et al., (2014) [65] Unclear High N/A N/A Low N/A Detailed Good No
2 Douglas A & McCann I, (1996) [66] High High N/A N/A Low N/A Adequate Good No
3 Beaumont B (1979) [63] Unclear High N/A N/A Low N/A Incomplete Potential No
4 Eskin F, (1974) [64] Low High N/A N/A Low Low Detailed Limited No
5 Baker M et al. (1997) [67] Low Low Unclear Low Low Low Limited Limited No
6 Hilton S et al. (1997) [58] N/A N/A N/A N/A High N/A Detailed N/A Yes
7 Freeman et al. (2002) Low High N/A N/A Low Low Adequate Limited No
8 Bellman L (2002) [60] High High N/A N/A Low N/A Detailed Limited Yes
9 Wilkinson D (2001) [61] Low N/A N/A N/A Low Low Adequate Potential Yes
10 White CD et al. (2007) [62] Unclear High N/A N/A Low- N/A Incomplete Limited Yes
11 Gardiner M et al. (2006) [48] Unclear High N/A N/A High- Unclear Detailed Potential No
12 Straume et al. (2010) [50] Low High N/A N/A Low Low Detailed Potential No
13 Straume and Shaw (2010) [49] Low Low Unclear Unclear Low Unclear Detailed Potential No
14 Felix H et al. (2003) [70] Unclear High N/A N/A Low N/A Adequate Potential No
15 MacIsaac et al. (2000) [71] Unclear High N/A N/A Low N/A Adequate Potential Yes-
16 Bregazzi R and Harrison (2005) [38] Low High N/A N/A Unclear Unclear Poor Limited No
17 Kahn TR et al. (2010) [39] Low High N/A N/A Low Low Detailed Limited No
18 Crouse BJ and Munson RL (2006) [40] Low High N/A N/A Low Unclear Adequate Potential No
19 Robinson M and Slaney GM (2013) [41] High High N/A N/A Low 2X Data sets High Adequate Potential Yes
20 Rabinowitz et al. (2005) [32] Low Low Unclear Unclear Low Low Adequate Potential Yes
21 Mathews M et al. (2008) [33] Low High N/A N/A Low Low- Detailed Potential Yes
22 Quinn KJ et al. (2011) [34] Low Low Unclear Unclear Low High Adequate Potential Yes
23 Landry et al. (2011) [35] Low Low Unclear Low Low High Detailed Limited Yes
24 Magnus JH & Tollan A (1993) [36] Low High N/A N/A High Low Adequate Potential Yes
25 Stearns et al. (2000) [37] Low High N/A N/A Low Unclear Limited Potential Yes
26 Halaas et al. (2008) [42] Low High N/A N/A Low- Unclear- ‘ Detailed Good Yes
27 Smucny J et al. (2005) [43] High Low Low Unclear Low High Adequate Good Yes
28 Adkins et al. (1987) [44] Low Low Unclear Unclear Low Low Adequate Potential Yes
29 Wearne S et al. (2010) [46] Low High N/A N/A Low Low Detailed Limited Yes
30 Charles et al. (2005) [45] Low High N/A N/A Low Low Adequate Potential No
31 Morris CG et al. (2008) [47] Low Low Low Low Low Unclear Detailed Potential No
32 Barclay et al. (1994) [51] Low Low Unclear Unclear High- Unclear Poor Limited Yes
33 Paul Green (2015) [52] Unclear N/A N/A N/A High Low Limited Potential Unclear
34 Harrison J and Redpath L (2002) [68] High High N/A N/A Unclear Low Adequate Potential No
35 Delacourt L and Savage R (2002) [69] Low High N/A N/A Unclear Low Adequate Potential No
36 Matsumoto M et al. (2008) [21] Low Low Low Unclear Low Low Detailed Good No
37 Matsumoto M et al. (2008) [22] Low High N/A N/A Low Low Detailed Good No
38 US department of Health and Human services Health resources and services administration
(2012) [23]
Unclear High N/A N/A High Low Limited Potential Yes
39 Pathman D et al. (1992) [24] Low Low Unclear High Low Low Detailed Good Yes
40 Cullen TJ et al. (1997) [25] Low High N/A N/A Low- Low Detailed Good No
41 New Zealand Ministry of Health (2012) [26] Unclear High N/A N/A High Unclear Limited Potential No
42 Dunbabin JS et al. (2006) [27] High – High N/A N/A Low Low Adequate Potential Yes
43 Jackson J et al. (2003) [28] Low Low Low High Low Low Adequate Limited NO
44 Mathews M et al. (2013) [29] Low Low Low Low Low Low Adequate Good Yes
45 Navin TR and Nichols AW (1977) [30] Low High N/A N/A Low Low Detailed Limited Yes
46 Pathman et al. (2004) [31] High Low Low Low Low Low Adequate Good No
47 WONCA (2010) [53] Unclear High N/A N/A Unclear Unclear Limited Limited No
48 Pena S et al. (2010) [54] Unclear High N/A N/A Unclear Unclear Limited Limited No
49 Wilson et al. (1998) [55] Unclear High N/A N/A High Unclear Limited Limited No
50 Hutten – Czapski (1998) [56] N/A N/A N/A N/A High Unclear Limited Limited No
51 Anderson M & Rosenberg (1990) [57] N/A N/A N/A N/A High Low Detailed Limited No