Does Helicobacter pylori infection play a role in iron deficiency anemia? A meta-analysis

Table 2 Methodological quality assessment based on MINORS¹

Source	Aim2	Rate3	Data4	Measure5	Bias6	Time7	Loss8	Size9	Total10
Milman et al[31]	2	2	2	2	2	1	1	0	12
Choe et al[32]	2	1	1	1	2	1	0	0	8
Cuoco et al[33]	1	1	1	2	2	0	0	1	8
Choe et al[34]	2	1	1	2	2	1	0	0	9
Nahon et al[35]	1	2	2	1	2	1	1	0	10
Choe et al[36]	2	2	1	1	0	0	0	0	6
Choi[37]	2	1	1	2	2	2	1	0	11
Ciacci et al[38]	1	1	2	1	2	1	0	0	8
Hershko et al[39]	1	1	1	1	2	1	1	0	8
Gessner et al[40]	2	2	2	1	2	2	2	1	14
Baggett et al[41]	2	1	2	1	2	1	1	0	10
Cardenas et al[42]	2	2	2	1	2	1	1	1	12
Süoglu et al[43]	1	1	1	1	2	1	0	0	7

¹Assessed with the adapted Methodological Index for Non-Randomized Studies (MINORS)[25];

²Clearly stated aim (0,1,2 points);

³Inclusion of consecutive patients and response rate (0,1,2);

⁴Prospective collection of data (0,1,2);

⁵Inclusion of employment measure (0,1,2);

⁶Unbiased assessment of study end points (0 or 2);

⁷Follow-up time appropriate (0,1,2);

⁸Loss to follow-up (0,1,2);

⁹Prospective calculation of the study size (0 or 1);

¹⁰Total: minimum equals 0; maximum equals 15 points.