Table 2 (a) Risk of bias in studies using probiotics containing B. infantis; (b) risk of bias in studies using probiotics without B. infantis.
From: Bifidobacterium infantis as a probiotic in preterm infants: a systematic review and meta-analysis
(a) | ||||||
|---|---|---|---|---|---|---|
S. no. | Study ID | Random sequence generation (selection bias) | Allocation concealment (selection bias) | Blinding (performance and detection bias) all outcomes | Incomplete outcome data (attrition bias) all outcomes | Selective reporting (reporting bias) |
1 | Al-Hosni20 | Unclear risk | Unclear risk | Unclear risk | Low risk | Low risk |
2 | Alshaik21 | Low risk | Low risk | Unclear risk | Low risk | Low risk |
3 | Bin-Nun22 | Unclear risk | Unclear risk | Unclear risk | Low risk | Unclear risk |
4 | Chowdhury23 | High risk | High risk | High risk | Low risk | Low risk |
5 | Dutta24 | Low risk | Unclear risk | Low risk | Low risk | Low risk |
6 | Fernandez-Carrocera25 | Low risk | Low risk | Unclear risk | Low risk | Low risk |
7 | Jacobs26 | Low risk | Low risk | Low risk | Low risk | Low risk |
8 | Kanic27 | High risk | High risk | High risk | Low risk | Low risk |
9 | Lin28 | Low risk | Low risk | Unclear risk | Low risk | Low risk |
10 | Ren29 | Low risk | Unclear risk | High risk | Unclear risk | Unclear risk |
11 | Samanta30 | Unclear risk | Unclear risk | High risk | Low risk | Low risk |
12 | Sinha31 | Low risk | Low risk | Low risk | Low risk | Low risk |
13 | Sowden32 | Unclear risk | Low risk | Low risk | Low risk | Unclear risk |
14 | Van Neikerk33 | Low risk | Low risk | Low risk | Low risk | Low risk |
15 | Van Neikerk34 | Low risk | Low risk | Low risk | Low risk | Low risk |
16 | Xiao-yuan35 | High risk | High risk | High risk | Low risk | High risk |
(b) | ||||||
|---|---|---|---|---|---|---|
S. no. | Study ID | Random sequence generation (selection bias) | Allocation concealment (selection bias) | Blinding (performance and detection bias) all outcomes | Incomplete outcome data (attrition bias) all outcomes | Selective reporting (reporting bias) |
1. | Arora36 | Low risk | High risk | High risk | Low risk | Low risk |
2. | Braga37 | Low risk | Low risk | Unclear risk | Low risk | Low risk |
3. | Chandrashekar38 | High risk | Unclear risk | High risk | Low risk | Low risk |
4. | Chrzanowska-Liszewska39 | Low risk | Low risk | Low risk | Low risk | Low risk |
5. | Costalos40 | Unclear risk | Low risk | Low risk | Low risk | Low risk |
6. | Costeloe41 | Low risk | Low risk | Low risk | Low risk | Low risk |
7. | Cui42 | Low risk | Unclear risk | Low risk | Low risk | Unclear risk |
8. | Dani43 | Unclear risk | Low risk | Low risk | Low risk | Low risk |
9. | Dashti44 | Unclear risk | Unclear risk | Low risk | Unclear risk | Unclear risk |
10. | Demirel45 | Low risk | Low risk | High risk | Low risk | Low risk |
11. | Deng46 | High risk | High risk | High risk | Low risk | High risk |
12. | Dilli47 | Low risk | Low risk | Low risk | Low risk | Low risk |
13. | Singh79 | Low risk | Low risk | Low risk | Low risk | Low risk |
14. | Fujii48 | Unclear risk | Unclear risk | High risk | Unclear risk | Unclear risk |
15. | Hariharan49 | Unclear risk | Unclear risk | High risk | Low risk | Unclear risk |
16. | Hays50 | Low risk | Low risk | Low risk | Low risk | Low risk |
17. | Hernandaz-Enriqez51 | Unclear risk | Low risk | High risk | Unclear risk | Unclear risk |
18. | Hikaru52 | Unclear risk | Unclear risk | High risk | Low risk | Unclear risk |
19. | Hua53 | Low risk | High risk | Low risk | Low risk | Unclear risk |
20. | Huang54 | Unclear risk | Unclear risk | High risk | Unclear risk | Unclear risk |
21. | Shashidar78 | Low risk | Low risk | Low risk | Unclear risk | Low risk |
22. | Kaban55 | High risk | Unclear risk | Unclear risk | Unclear risk | Low risk |
23. | Kitajima56 | Unclear risk | Unclear risk | High risk | Low risk | Low risk |
24. | Lin57 | Low risk | Low risk | Unclear risk | Low risk | Low risk |
25. | Manzoni58 | Low risk | Unclear risk | High risk | Low risk | Low risk |
26. | Marti59 | Low risk | Low risk | Low risk | Low risk | Low risk |
27. | Mihatsch60 | Low risk | Low risk | Low risk | Low risk | Low risk |
28. | Millar61 | Unclear risk | Unclear risk | Unclear risk | Low risk | Low risk |
29. | Mohan62 | Low risk | Unclear risk | Unclear risk | Low risk | Low risk |
30. | Oncel63 | Low risk | Low risk | Low risk | Low risk | Low risk |
31. | Oshiro64 | Low risk | Low risk | Low risk | Low risk | Low risk |
32. | Patole65 | Low risk | Low risk | Low risk | Low risk | Low risk |
33. | Qiao66 | Low risk | Low risk | Low risk | Low risk | Low risk |
34. | Rehman67 | Low risk | Unclear risk | High risk | Low risk | Unclear risk |
35. | Reuman68 | High risk | High risk | High risk | Low risk | Unclear risk |
36. | Rojas69 | Low risk | Low risk | Low risk | Low risk | Low risk |
37. | Romeo70 | Low risk | High risk | High risk | Low risk | High risk |
38. | Rouge71 | Low risk | Low risk | Low risk | Low risk | Low risk |
39. | Roy72 | Low risk | Low risk | Low risk | Low risk | Low risk |
40. | Sadowska-Krawczenko73 | Low risk | Low risk | Low risk | Low risk | Low risk |
41. | Saewngtawesin74 | Unclear risk | Unclear risk | High risk | Low risk | Low risk |
42. | Sari75 | Low risk | Low risk | Unclear risk | Low risk | Low risk |
43. | Serec76 | Low risk | Low risk | Unclear risk | Low risk | Low risk |
44. | Shadkam77 | Low risk | Unclear risk | Unclear risk | Low risk | Low risk |
45. | Speckels80 | Low risk | Low risk | Low risk | Low risk | Low risk |
46. | Stratiki81 | Low risk | Unclear risk | Unclear risk | Low risk | Low risk |
47. | Strus82 | Low risk | Low risk | Low risk | Low risk | Low risk |
48. | Tewari83 | Low risk | Low risk | Low risk | Low risk | Low risk |
49. | Totsu84 | Low risk | Unclear risk | Low risk | Low risk | Low risk |
50. | Wejryd85 | Low risk | Low risk | Low risk | Low risk | Low risk |
51. | Xu86 | Low risk | Low risk | Low risk | High risk | High risk |
