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Repeat prenatal corticosteroid prior to preterm birth: a systematic review and individual participant data meta-analysis for the PRECISE study group (prenatal repeat corticosteroid international IPD study group: assessing the effects using the best level of evidence) - study protocol

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Author(s): Crowther Caroline A | Aghajafari Fariba | Askie Lisa M | Asztalos Elizabeth V | Brocklehurst Peter | Bubner Tanya K | Doyle Lex W | Dutta Sourabh | Garite Thomas J | Guinn Debra A | Hallman Mikko | Hannah Mary E | Hardy Pollyanna | Maurel Kimberly | Mazumder Premasish | McEvoy Cindy | Middleton Philippa F | Murphy Kellie E | Peltoniemi Outi M | Peters Dawn | Sullivan Lisa | Thom Elizabeth A | Voysey Merryn | Wapner Ronald J | Yelland Lisa | Zhang Sasha

Journal: Systematic Reviews
ISSN 2046-4053

Volume: 1;
Issue: 1;
Start page: 12;
Date: 2012;
Original page

ABSTRACT
Abstract Background The aim of this individual participant data (IPD) meta-analysis is to assess whether the effects of repeat prenatal corticosteroid treatment given to women at risk of preterm birth to benefit their babies are modified in a clinically meaningful way by factors related to the women or the trial protocol. Methods/Design The Prenatal Repeat Corticosteroid International IPD Study Group: assessing the effects using the best level of Evidence (PRECISE) Group will conduct an IPD meta-analysis. The PRECISE International Collaborative Group was formed in 2010 and data collection commenced in 2011. Eleven trials with up to 5,000 women and 6,000 infants are eligible for the PRECISE IPD meta-analysis. The primary study outcomes for the infants will be serious neonatal outcome (defined by the PRECISE International IPD Study Group as one of death (foetal, neonatal or infant); severe respiratory disease; severe intraventricular haemorrhage (grade 3 and 4); chronic lung disease; necrotising enterocolitis; serious retinopathy of prematurity; and cystic periventricular leukomalacia); use of respiratory support (defined as mechanical ventilation or continuous positive airways pressure or other respiratory support); and birth weight (Z-scores). For the children, the primary study outcomes will be death or any neurological disability (however defined by trialists at childhood follow up and may include developmental delay or intellectual impairment (developmental quotient or intelligence quotient more than one standard deviation below the mean), cerebral palsy (abnormality of tone with motor dysfunction), blindness (for example, corrected visual acuity worse than 6/60 in the better eye) or deafness (for example, hearing loss requiring amplification or worse)). For the women, the primary outcome will be maternal sepsis (defined as chorioamnionitis; pyrexia after trial entry requiring the use of antibiotics; puerperal sepsis; intrapartum fever requiring the use of antibiotics; or postnatal pyrexia). Discussion Data analyses are expected to commence in 2011 with results publicly available in 2012.
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