Table 1.
Description of the studies included in the systematic review.
| Authors and year | Journal (I.F.) | Geographical locality | Study design | Pregnant women | Trimester of the pregnancy |
|---|---|---|---|---|---|
| (38) | Gastroenterology and Hepatology (3.437) | Teerã, Iran | Cross-sectional | N=268 AR: N. I. |
UN |
| (39) | Journal Obstetrics Gynaecology (6.120) | Taiwan, China | Cross-sectional | N=220 AR: N.I. |
UN |
| (40) | The Journal of Infectious Diseases (5.186) | Cali, Colombia, USA | Cohort |
USA
N=144 AR:16-47 years AA: 29,3 years Colombia N=113 AR: 16-46 years AA: 28,3 years |
UN |
| (41) | Egyptian Journal of Human Medical Genetics (0.440) | Giza, Egypt | Control case | N=61 AR: 27-36 years AA: 31.5 years |
UN |
| (42) | Frontiers in Immunology (6.429) | City of Mexico, Mexico | Cross-sectional | N=11 AR: 18-38 years AA: 28 years |
1st trimester (n=6); 2nd trimester (n=3); 3rd trimester (n=2) |
| (43) | Journal of Parasite Research (1.872) | Sudan, India | Cross-sectional | N=68 AA: 30.28 years |
UN |
| (44) | Frontiers in Immunology (6.429) | City of Mexico, Mexico | Cross-sectional | N=17 AR: N. I. AA: 29 years |
1st trimester (n=6); 2nd trimester (n=3); 3rd trimester (n=8) |
| (25) | Acta Tropica (2.555) | Santa Cruz, Brasil | Cross-sectional | N=101 AA: 30.5 years |
UN |
IF, impact factor; UN, uninformed; N, number; AR, age range; AA, age average.