Rehospitalisation Risk Factors and Rates in Preterm Babies: A Systematic Review and Meta-Analysis
Objective: To systematically review evidence of risk factors and rates for rehospitalisations within one month of discharge for babies born at <37 weeks gestation.
Design: Systematic review and meta-analysis
Data Sources: PubMed (including MEDLINE and life science journals), Web of Science and reference lists of included articles.
Study Selection: Inclusion criteria were studies published in English or French between 01 January 2000 to 31 March 2019, recruiting from the year 2000 onwards evaluating risk factors for rehospitalisation within one month of discharge in preterm babies. Two reviewers independently selected relevant studies, extracted study details, baseline characteristics and results of risk factor analyses.
Results: Across 14 included studies, five studied babies of <37 weeks gestation, seven studied late preterm babies (34-36 weeks gestation), and two studied very to moderate preterm babies (<34 weeks gestation). Important risk factors were low birth weight, respiratory morbidity, male sex and lower socioeconomic status in <37 week babies, and shorter length of stay among late preterm babies. Pooled rehospitalisation rates were 4.3% (95% CI 1.9-9.7) in <37 week babies and 6.6% (95% CI 3.2-13.4) in late preterm babies. There was high heterogeneity in risk factors included in analyses and studies often lacked clarity on variable measurement and confounder adjustment.
Conclusion: We found evidence for clinical and socioeconomic risk factors, high heterogeneity and important limitations. Limitations included a lack of breadth in both the gestational age ranges and risk factors studied, as well as lack of clarity around variable measurement and confounder adjustment
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This is a list of supplementary files associated with this preprint. Click to download.
Online supplemental 1. Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines checklist
Online supplemental 2. Search terms and inclusion criteria for study selection.
Online supplemental 3. Population characteristics extracted from included studies; n= sample size; sd= standard deviation.
Online supplemental 4. Quality assessment tables for included studies using CASP tool19.
Online supplemental 5. Results for risk factor analyses for studies investigating rehospitalisation (within approximately one month) in samples of preterm babies born at <37 weeks gestation. aHR= adjusted hazard ratio; aOR= adjusted odds ratio; RH= rehospitalisation; LCL= lower confidence limit; UCL= upper confidence limit.
Online supplemental 6. Results for risk factor analyses for studies investigating rehospitalisation (within approximately one month) in samples of preterm babies born at 34-36 weeks gestation. aOR= adjusted odds ratio; RH= rehospitalisation; LCL= lower confidence limit; UCL= upper confidence limit.
Online supplemental 7. Results for risk factor analyses for studies investigating rehospitalisation (within approximately one month) in samples of preterm babies born at <34 weeks gestation or very low birth weight. aHR= adjusted hazard ratio; aOR= adjusted odds ratio; RH= rehospitalisation; LCL= lower confidence limit; UCL= upper confidence limit; CLD= chronic lung disease; IVH= severe intraventricular haemorrhage; NEC= necrotising enterocolitis
Online supplemental 8. Synthesis of meta-analyses by gestational age (GA) grouping. RH= rehospitalisation within one month or less of discharge, as defined in each study.*After exclusion of studies with inappropriate study design or insufficient data for meta-analysis.
Posted 08 Jan, 2021
On 21 Jan, 2021
On 21 Jan, 2021
Invitations sent on 14 Jan, 2021
On 07 Jan, 2021
On 07 Jan, 2021
On 07 Jan, 2021
On 27 Dec, 2020
Rehospitalisation Risk Factors and Rates in Preterm Babies: A Systematic Review and Meta-Analysis
Posted 08 Jan, 2021
On 21 Jan, 2021
On 21 Jan, 2021
Invitations sent on 14 Jan, 2021
On 07 Jan, 2021
On 07 Jan, 2021
On 07 Jan, 2021
On 27 Dec, 2020
Objective: To systematically review evidence of risk factors and rates for rehospitalisations within one month of discharge for babies born at <37 weeks gestation.
Design: Systematic review and meta-analysis
Data Sources: PubMed (including MEDLINE and life science journals), Web of Science and reference lists of included articles.
Study Selection: Inclusion criteria were studies published in English or French between 01 January 2000 to 31 March 2019, recruiting from the year 2000 onwards evaluating risk factors for rehospitalisation within one month of discharge in preterm babies. Two reviewers independently selected relevant studies, extracted study details, baseline characteristics and results of risk factor analyses.
Results: Across 14 included studies, five studied babies of <37 weeks gestation, seven studied late preterm babies (34-36 weeks gestation), and two studied very to moderate preterm babies (<34 weeks gestation). Important risk factors were low birth weight, respiratory morbidity, male sex and lower socioeconomic status in <37 week babies, and shorter length of stay among late preterm babies. Pooled rehospitalisation rates were 4.3% (95% CI 1.9-9.7) in <37 week babies and 6.6% (95% CI 3.2-13.4) in late preterm babies. There was high heterogeneity in risk factors included in analyses and studies often lacked clarity on variable measurement and confounder adjustment.
Conclusion: We found evidence for clinical and socioeconomic risk factors, high heterogeneity and important limitations. Limitations included a lack of breadth in both the gestational age ranges and risk factors studied, as well as lack of clarity around variable measurement and confounder adjustment
Figure 1
Figure 2