| 1. Sample representative for the target population? | 2. Sample included in the study in a valid and reliable way? | 3. Adequate explanation whether the respondents differed from non-responders? | 4. Is there an acceptable response rate (70% or above)? | 5. Are measurements appropriate? | 6. Is data collection standardized? | 7. Is data analysis standardized? | 8. Are the results relevant for clinical practice? | 9. Are the results in line with other available studies? |  |
---|---|---|---|---|---|---|---|---|---|---|
Surveysa | ||||||||||
AL-Qudimat, MR, 2011 [28] | + | + | â | + | + | + | + | + | + | Â |
Ball SD, 2005 [29] | + | + | ? | ? | â | + | + | + | + | Â |
Ben Arush, 2006 [30] | + | + | ? | ? | + | + | + | + | + | Â |
Fernandez C, 1998 [31] | + | + | + | + | + | + | + | + | + | Â |
Gagnon EM, 2003 [32] | + | + | ? | ? | + | + | + | + | + | Â |
Gozum S, 2007 [33] | + | + | ? | â | + | + | + | + | + | Â |
Ladas EJ, 2014 [34] | + | + | + | + | + | + | + | + | + | Â |
Laengler A, 2008 [35] | + | + | ? | â | + | + | + | + | + | Â |
Magi T, 2015 [18] | + | + | + | â | + | + | + | + | + | Â |
Molassiotis A, 2004 [36] | + | + | â | â | + | + | + | + | + | Â |
Ndao DH, 2013 [37] | + | + | â | ? | + | + | + | + | + | Â |
Olbara G, 2018 [38] | + | + | + | + | + | + | + | + | + | Â |
Rajanandh MG, 2018 [39] | + | ? | â | ? | â | + | + | + | â | Â |
Singendonk M, 2013 [40] | + | + | + | + | + | + | + | + | + | Â |
Susilawati D, 2016 [41] | + | + | + | + | + | + | + | + | + | Â |
Turhan AB, 2016 [10] | + | + | ? | + | + | + | + | + | + | Â |
 | 1. Is the source of the opinion clearly identified? | 2. Does the source of the opinion have standing in the field of expertise? | 3. Are the interests of the relevant population the central focus of the opinion? | 4. Is the stated position the result of an analytical process? | 5. Is there reference to the extant literature? | 6. Is any incongruence with the literature/sources logically defended? |  |  |  |  |
Expert opinionsb | ||||||||||
Agapito J, 2000 [42] | + | + | + | + | + | + | Â | Â | Â | Â |
The American Academy of âPaediatrics, 2001 [43] | + | + | + | + | + | + | Â | Â | Â | Â |
Clayton MF, 2006 [44] | + | + | + | + | + | ? | Â | Â | Â | Â |
Gilmour J, 2011 [45] | + | + | + | + | + | + | Â | Â | Â | Â |
Tautz C, 2005 [46] | + | + | + | + | + | + | Â | Â | Â | Â |
 | 1. Was there a clear statement of the aims of the research? | 2. Is a qualitative methodology appropriate? | 3. Was the research design appropriate to address the aims of the research? | 4. Was the recruitment strategy appropriate to the aims of the study? | 5. Was the data collection in a way that addressed the research issue? | 6. Is relationship between researcher and participants adequately considered? | 7. Have ethical issues been taken into consideration? | 8. Was the data analysis sufficiently rigorous? | 9. Is there a clear statement of findings? | 10. Is the research valuable? |
Qualitative studiesc | ||||||||||
Bold J, 2001 [47] | + | ? | + | + | ? | â | ? | â | â | + |
Fletcher PC, 2004 [48] | + | + | + | + | + | + | â | ? | + | + |
Krogstad T, 2007 [49] | + | + | + | + | + | â | â | â | + | â |