Table 1 Characteristics of studies included in analysis.

From: Efficacy and safety of medical cannabinoids in children: a systematic review and meta-analysis

Authors and year of publication

Study type

Number of participants

Range of ages (years)

Route of administ-ration

Intervention and control

Indication

Follow up period

Funding

Dalzell et al.49

RCT. double blind, crossover

23a

0.8–17.0

Oral capsules or white powder

Nabilone vs. domperidone

Chemotherapy-Induced Emesis

Two cycles of chemotherapyb

Eli Lilly

Chan et al.48

RCT, double-blind, crossover

36a

3.5–17.8

Oral capsules

Nabilone vs. prochlorperazine

Chemotherapy-Induced Emesis

Two cycles of chemotherapyb

Eli Lilly

Devinsky et al.28

RCT, double-blind

120

2.3–18.4

Oral solution

CBD 20 mg/kg/d vs. Placebo

Dravet syndrome

14-week treatment period, a 10-day taper period, and a 4-week safety follow-up period

GW Pharmaceuticals

Devinsky et al.30

RCT, double-blind

34

4.0–10.9

Oral solution

CBD 5,10,20 mg/kg/d vs. Placebo

Dravet syndrome

3-week treatment, 10-day taper, and 4-week safety follow-up periods

GW Pharmaceuticals

Miller et al.50

RCT, double-blind

199

2.0–18.0

Oral solution

CBD dose 10,20 mg/kg/d vs. Placebo

Dravet syndrome

2-week titration period followed by a 12-week maintenance period

GW Pharmaceuticals

Fairhurst et al.51

RCT, double-blind

72

8.0–18.0

Spray

max 12 actuations of Nabiximols sprayc vs. Placebo

Spasticity due to cerebral palsy or traumatic, non‐progressive CNS injury

Patients titrated over a period of 9 weeks followed by 3 weeks of maintenance to a total of 12 weeks

GW Pharmaceuticals

Efron et al.52

RCT, double-blind

8

8.0–16.0

Oral solution

CBD 20 mg/kg/d vs. Placebo

Severe behavioral problems with intellectual disability

9-days up-titration, followed by 8 weeks of maintenance and 9 days down-titration

Internal grant (not commercial sponsor)

Aran et al53

RCT, double-blind, crossover

150

5–21

Oral solution

whole-plant cannabis extract, purified CBD and THC vs. Placebod

Autism spectrum disorder

12-weeks, followed by a 4-week washout and cross-over for another 12 weeks

BOL Pharma and the National Institute for Psychobiology in Israel

  1. aThese two RCT’s were rated low in quality assessment in RoB-2, as detailed in Supplementary Fig. 2.
  2. bThese two RCT’s did not specify what was follow up period after treatment.
  3. cEvery actuation of spray contains 2.7 mg THC, 2.5 mg CBD. The study reported that the mean dosage was 15.7 ± 4.4 mg THC and 14.6 ± 4.0 mg CBD.
  4. dBoth extracts contained CBD and THC in ratio 20:1 respectively. The study reported that the mean dosage was 5.8 mg/kg a day.