Estimated reductions in provider-initiated preterm births and hospital length of stay under a universal acetylsalicylic acid prophylaxis strategy: a retrospective cohort study

Departments of Medicine and of Obstetrics and Gynecology (Ray), St. Michael's Hospital, University of Toronto; University of Toronto (Bartsch); Institute for Clinical Evaluative Sciences (Park); Department of Paediatrics (Shah), Mount Sinai Hospital, University of Toronto; Toronto, Ont.; Maternal, Child and Youth Health Unit (Dzakpasu), Public Health Agency of Canada, Ottawa, Ont.

Departments of Medicine and of Obstetrics and Gynecology (Ray), St. Michael's Hospital, University of Toronto; University of Toronto (Bartsch); Institute for Clinical Evaluative Sciences (Park); Department of Paediatrics (Shah), Mount Sinai Hospital, University of Toronto; Toronto, Ont.; Maternal, Child and Youth Health Unit (Dzakpasu), Public Health Agency of Canada, Ottawa, Ont.

Departments of Medicine and of Obstetrics and Gynecology (Ray), St. Michael's Hospital, University of Toronto; University of Toronto (Bartsch); Institute for Clinical Evaluative Sciences (Park); Department of Paediatrics (Shah), Mount Sinai Hospital, University of Toronto; Toronto, Ont.; Maternal, Child and Youth Health Unit (Dzakpasu), Public Health Agency of Canada, Ottawa, Ont.

Departments of Medicine and of Obstetrics and Gynecology (Ray), St. Michael's Hospital, University of Toronto; University of Toronto (Bartsch); Institute for Clinical Evaluative Sciences (Park); Department of Paediatrics (Shah), Mount Sinai Hospital, University of Toronto; Toronto, Ont.; Maternal, Child and Youth Health Unit (Dzakpasu), Public Health Agency of Canada, Ottawa, Ont.

Departments of Medicine and of Obstetrics and Gynecology (Ray), St. Michael's Hospital, University of Toronto; University of Toronto (Bartsch); Institute for Clinical Evaluative Sciences (Park); Department of Paediatrics (Shah), Mount Sinai Hospital, University of Toronto; Toronto, Ont.; Maternal, Child and Youth Health Unit (Dzakpasu), Public Health Agency of Canada, Ottawa, Ont.