Table 1. Summary of probiotic yogurt studies in pregnancy.
Assessment of type of study performed, location, number of participants, and period of pregnancy in which the study was performed. Data is further grouped into types of study.
| Author and Year of Article | Type of Study | Location of Study | Participants (experimental/control) | Period of Pregnancy |
| Case Control Studies (2) | ||||
| Chen, et al., 2019 [5] | Case-control | China | (123/126) | Pre-pregnancy and Pregnancy |
| Celik, et al., 2019 [12] | Case-control | Turkey | (84/56) | Pregnancy |
| Clinical Trials (10) | ||||
| Kriss, et al., 2018 [14] | Clinical trial - observational | Mexico | (965) | Mid-pregnancy |
| Mirghafourvand, et al., 2016 [6] | Randomized controlled clinical trial | Iran | (30/30) | Pregnancy |
| Bisanz, et al., 2015 [15] | Open-label clinical trial | Tanzania | (26/30) | Pregnancy |
| Bisanz, et al., 2014 [11] | Open-label clinical trial | Tanzania | (60) | 2nd and 3rd trimester |
| Asemi, et al., 2013 [16] | Randomized controlled clinical trial | Iran | (70) | 3rd trimester |
| Asemi and Esmaillzadeh, 2013 [17] | Randomized controlled clinical trial | Iran | (70) | 3rd trimester |
| Asemi, et al., 2012 [18] | Randomized controlled clinical trial | Iran | (70) | 3rd trimester |
| Asemi, Jazayeri, et al., 2012 [19] | Randomized controlled clinical trial | Iran | (70) | 3rd trimester |
| Asemi, et al. 2011 [13] | Randomized controlled clinical trial | Iran | (70) | 3rd trimester |
| Hantoushzadeh, et al., 2012 [20] | Randomized controlled clinical trial | Unable to assess | (310) | 3rd trimester |
| Literature Review (1) | ||||
| Othman, et al., 2007 [21] | Review | N/A | 4 randomized controlled trials, 2 included | |