From:  Systematic review of probiotic supplementation in Alzheimer’s patients with results on cognitive function, health biomarkers, and microbiota

 Methodological quality assessment of included studies using the McMaster Critical Review Form [25].

StudyItemTotal%Quality
12345678910111213141516
Agahi et al. [28] 2018111111111111111116100E
Akbari et al. [29] 2016111111111111111116100E
Akhgarjand et al. [30] 2022111111111111111116100E
Hsu et al. [31] 202311111011111111111593.8E
Tamtaji et al. [32] 2019111111111111111116100E

E: Excellent; 0: criterion not met; 1: criterion met; item 1: purpose of the study; item 2: literature review; item 3: study design; item 4: blinded; item 5: sample description; item 6: sample size; item 7: ethics and consent; item 8: validity of results; item 9: reliability of results; item 10: description of intervention; item 11: statistical significance; item 12: statistical analysis; item 13: clinical significance; item 14: conclusions; item 15: clinical implications; item 16: study limitations.