Search and Screening
We sought English-language articles that used any method to gather and
analyze primary, empirical data about the experiences, beliefs or
opinions of pregnant people or their partners about cannabis use in
pregnancy and lactation (Table 1). A search for published literature was
performed by a medical librarian on April 01-02, 2020 using the
following databases: MEDLINE, APA PsycINFO, Cumulative Index to Nursing
and Allied Health Literature (CINAHL), Social Science Citation Index
(SSCI), Social Work Abstracts, ProQuest Sociology Collection (including
Sociological Abstracts). Grey literature searching was confined to
theses, searched through the ProQuest Dissertation Abstracts database.
The search strategy (Appendix 1) comprised both controlled vocabulary
and keywords and was peer-reviewed according to the PRESS checklist
(Peer Review of Electronic Search Strategies). No limits to date or
study design were applied. We also conducted a hand-search of eight
relevant journals, described in Appendix 1.
Four reviewers (JP, AP, ST, MV) screened the titles and abstracts of all
citations based on the eligibility criteria (Table 1). Full text
articles were reviewed when more information was necessary to determine
eligibility. Each article was screened independently by two reviewers
and discrepancies were resolved through discussion with a third reviewer
until consensus was reached. After identifying eligible articles, we
traced citations forwards and backwards to identify additional eligible
articles. PRISMA diagram depicting article selection process is in
Figure 1.