Table 5.
Comparative evaluation of current systematic review and meta-analysis with other systematic reviews.
| Authors | Study design | Type of study(case series/case reports) | Number of studies | Sample size (mothers/neonates) | C-section | Preterm birth | LBW | Other events | Infection transmission | Included studies |
|---|---|---|---|---|---|---|---|---|---|---|
| Trocado [13] et al [77] | Systematic Review | Mixed (6/2) | 8 | 95/51 | 94 % | 35 % | 20 % | 1.9 % | 1.9 % | From China only |
| Thomas et al [14] | Systematic Scoping Review | Mixed (7/11) | 18 | 157/160 | 73 % | 20 % | 11 % | 1 % | 6 % | Limited countries |
| Juan et al [15] | Systematic Review | Mixed (9/15) | 24 | 324/221 | 78.1 % in case series | NR | 7.8 % in case reports | 1.4 % in case series; 0.5 % in case reports | 0.40 % | Multiple countries with predominantly case reports. Qualitative separate analysis |
| Matar et al [16] | Systematic Review | Mixed(14/10) | 24 | 136/94 | 76.30 % | 37.70 % | NR | NR | 11.50 % | Limited countries with weighted analysis without separate analysis for case reports and case series |
| Huntley et al [17] | Systematic Review | Case series (13) | 13 | 538/435 | 84.70 % | 20.10 % | NR | 0.30 % | 0 % | Limited countries without weighted analysis |
| Walker et al [18] | Systematic Review | Mixed (9/40) | 49 | 655/666 | 55.60 % | NR | NR | 1.20 % | 4 % | Multiple countries with predominantly case reports |
| Trippella et al [19] | Systematic Review | Mixed (18/19) | 37 | 275/248 | 75 % | 23 % | NR | 0.80 % | 8.40 % | Multiple countries |
| Smith et al [20] | Systematic Review | Mixed (4/5) | 9 | 92/60 | 80 % | 63.80 % | 42.80 % | 0.20 % | 0 % | From China only |
| Kasraeian et al [21] | Systematic review and meta-analysis | Mixed (NR) | 9 | 87/86 | NR | 61.20 % | NR | 0.40 % | 0.00 % | From China only with weighted analysis without separate analysis for case reports and case series |
| Yang et al [22] | Systematic Review | Mixed(10/8) | 18 | 114/84 | 91 % | 21.30 % | 5.30 % | 2.40 % | 0 % | From China only |
| Zaigham and Andersson [11] | Systematic Review | Mixed (4/14) | 18 | 108 | 91 % | NR | NR | 1.90 % | 0.10 % | Limited countries |
| Muhidin et al [23] | Systematic Review | Mixed (6/3) | 9 | 89 | 94 % | 33.70 % | 7.90 % | NR | 0 % | From China only |
| Current study | Meta-analysis | Case series (27) | 27 | 745/505 | 72 % (91 % in China, 40 % in US, 38 % in Europe) | 23 % (17 % in China, 12 % in US, 17 % in US) | 7% (5% in China) | 2.00 % | 1.00 % | Multiple countries, separate analysis by location, compared with controls, and association analysis with heterogeneity assessment |
| Systematic Review | Case reports (45) | 34 | 45/43 | 68.9 % (70 % in China, 50 % in US,78 % in Europe, and 75 % in others) | 56 % (45 % in China, 83 % in US,50 % in Europe, and 71 % in others) | 35 % (26 % in China, 67 % in US,44 % in Europe, and 17 % in others) | 5 % | 14 % | Multiple countries, separate analysis by location, and association analysis |
LBW: low birth weight; NR: not reported; Other events include deaths/still birth or early terminations.