Table 2.
Characteristics of studies included the impact of cesarean section on asthma in offspring, which met the inclusion criteria of both the present systematic review and meta-analysis.
| Author | Country | Study Design | Sample Size | Age | Assessed Asthma Morbidity |
|---|---|---|---|---|---|
| Kristensen et al. [20] | Denmark | Cohort Retrospective | 790,569 | from 0 to 14 y | Risk of asthma |
| Baumfeld et al. [67] | Israel | Cohort Retrospective | 132,054 | 18 y | Risk of asthma |
| Magnus et al. [68] | Norway | Prospective (Norwegian Mother and Child Cohort Study) | 37,171 | 3 y | Risk of asthma |
| van Berkel et al. [70] | Netherlands | Cohort Prospective | 6128 | 6 y | Risk of asthma |
| Chu et al. [73] | China | Case-Control Retrospective | 1385 | 5–12 y | Risk of asthma |
| Black et al. [74] | UK | Cohort Retrospective | 321,287 | 5 y | Asthma hospitalization |
| Peters et al. [81] | Australia | Cohort Prospective | 491,590 | in the first 28 days and up to 5 y | Risk of asthma |
| Pistiner et al. [85] | USA | Cohort Prospective | 498 | 9 y | Asthma symptoms |
| Roduit et al. [86] | Netherlands | Cohort Prospective | 2917 | 8 y | Risk of asthma |
| Pyrhonen et al. [88] | Finland | Cohort Retrospective | 4779 | 4 y | Risk of asthma |
| Lavin et al. [89] | Vietnam | Cohort Prospective | 2000 | 8 y | Risk of asthma |
| Lavin et al. [89] | India | Cohort Prospective | 2026 | 8 y | Risk of asthma |