Table 1

Demographic Details of Studies Included in this Review

Cannabis Group
StudyLocationStudy DesignSubjects, NSample Size, nMale:FemaleAge, y
Arseneault et al.17New ZealandCross-sectional95690N/A21 ± 0
Bácskai et al.21HungaryCross-sectional2586555:1025.3 ± 4.1
Budney et al.22United StatesLongitudinal301811:730.9 ± 8.2
De Sousa Fernandes Perna et al.23NetherlandsCross-sectional612115:621.9 ± 2.2
Denson and Earleywine19United StatesCross-sectional6,9106,9104,492:2,41830.69 ± 12.23
Dharmawardene and Menkes18New ZealandCross-sectional14114188:5338.2 (N/A)
Dugre et al.2United StatesLongitudinal1,1361,136636:50029.74 ± 6.24
Friedman et al.24United StatesCross-sectional612612306:30626.2 ± 1.52
Friedman et al.25United StatesCross-sectional612612306:30626.2 ± 1.52
Guimarães et al.26BrazilCross-sectional27483N/AN/A
Kouri et al.16United StatesLongitudinal371713:435.4 ± 4.2
Lee et al.27United StatesLongitudinal292929:028.5 ± 7.8
Macdonald et al.28CanadaCross-sectional126128N/AN/A
Moulin et al.29SwitzerlandLongitudinal240240162:10323.91 ± 0.31
Myerscough and Taylor30United StatesCross-sectional303030:0N/A
Philips et al.31United StatesCross-sectional152N/AAll femaleN/A
Schoeler et al.32EnglandLongitudinal411411411:0N/A
Smith et al.33United StatesCross-sectional2,8992,899N/AN/A
Taylor et al.34United StatesCross-sectional404040:0N/A

  • Age data are presented as mean ± SD.

  • N/A = not available