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Table 4 Reporting of dietary supplement design elements

From: The effectiveness of melatonin for promoting healthy sleep: a rapid evidence assessment of the literature

  Jet lag (n = 8) Insomnia (n = 4) Healthy volunteers (n = 15) Shift workers (n = 8) Total N (%)
Assessment of baseline exposure 0/8 2/4 2/15 0/8 4/35 (11%)
Control for background diet 5/8 1/4 11/15 4/8 21/35 (58%)
 Description of Melatonin preparation 1/8 3/4 11/15 5/8 20/35 (57%)
 Chemical analysis of Melatonin preparation 2/8 0/4 3/15 1/8 6/35 (17%)
 Absorption analysis of the Melatonin preparation 1/8 2/4 9/15 1/8 13/35 (37%)
Total N (%) 9/40 (22%) 8/20 (40%) 16/75 (48%) 11/40 (27%)