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Table 2 Quantitative study results

From: Social media use for nutrition outcomes in young adults: a mixed-methods systematic review

Author, Year Country Description of arms Outcomes Quantitative Results
Ashton, 2017 Australia 2 arms: intervention versus control (no treatment) BMI, weight, Fruit & Vegetable intake (serves/day), Diet Quality, Energy Intake (kJ/day), body fat mass (g) BMI: Mean difference change in BMI between intervention and control at 3 months: − 0.50 [− 0.89, − 0.11]
Beetham, 2015 United States 2 arms: Intervention #1 = Technology plus in-person; Intervention #2 = technology only
No control arm group, therefore excluded from meta-analyses.
BMI, weight BMI: Mean change of BMI at 8 weeks (intervention group #1): − 0.34 (s.d. 1.01); (intervention group #2): − 0.72 (s.d. 0.73).
Chung, 2017 United States 1 arm Fruit and vegetable intake, SSB intake Overweight group: increased fruit intake by mean 2.1 servings & vegetables by mean 2.5 serving & decreased SSB by 1.2 beverages; Healthy weight group: increased fruit intake by mean 1.8 servings & vegetables 0.5 servings & decreased SSB by 0.3 beverages. Measures of variance and statistical significance were not reported.
Dadkhah, 2013 United States 2 arms: Intervention versus control BMI, weight, energy intake (kcal/day) BMI: Mean difference between intervention and control at 7 months: 0.75 [0.62, 0.88]
Gow, 2010 United States 4 arms: Intervention #1: Internet only; #2: Feedback only; #3: combined Internet and feedback; #4: control BMI, weight, Fruit and vegetable (combined) intake (serves/day) BMI: Mean difference between intervention and control at 6 weeks: 0.91 [−1.23, 3.05]
Harvey-Berino, 2012 United States 1 arm; analysis was presented from 4 groups: Overweight versus healthy weight; and weight loss goal versus healthy lifestyle goal BMI, weight Results were reported for 4 groups. BMI: Mean difference between 4 months and baseline in overweight group with goal of weight loss: −1.0 [−2.47, 0.47]
Hebden, 2014 Australia 2 arms: Intervention versus control (received paper booklet with diet and physical activity information and one appointment with a dietitian) BMI, weight, Vegetable intake, fruit intake, sugar-sweetened beverages, energy-dense takeaway meals BMI: Mean difference between intervention and control at 3 months, adjusted for baseline data: −0.11 [−0.66, 0.43]; Vegetable, fruit, SSB: no statistical differences between interventionand control arms at 3 months
Laska & Lytle, 2017 United States 2 arms: Intervention versus control (received health promotion information quarterly) BMI, weight, waist circumference, % body fat BMI: Mean difference between intervention and control at 24 months: −0.20 [− 0.98, 0.58]
Laska, 2016 United States see Laska and Lytle Fast food, sugary beverages, eat breakfast 5–7 days/week; weekly meals prepared at home SSB: Mean difference between intervention and control at 24 months: −0.10 [− 0.38, 0.18]
Meng, 2017 United States 5 arms: # 1: demographically similar, incremental change; # 2 demographically diverse/incremental changes; # 3 demographically similar/ ideal changes; # 4 demographically diverse/ideal changes; and #5:control Fruit and vegetable intake Not reported by pre-assigned groups
Merchant, 2014 & Godino 2016 United States 2 arms: intervention versus control (access o website with general health information and quarterly newsletters) BMI, weight BMI: Mean difference between intervention and control at 24 months: −0.30 [− 0.89, 0.29]
Napolitano, 2013 United States 3 arms: Intervention #1: Facebook only; Intervention #2: Facebook PLUS goal setting/ self-monitoring/social support Weight Weight: Mean difference change of weight between intervention and control at 8 weeks: −0.39 [−2.07, 1.29]
Pappa, 2017 Brazil All members of r/Loseit forum; active users with weight data were included in quantitative analysis Weight 3.7%(28/754) of users gained weight (mean 3.88%, SD 4.04), 3.5%(25/754) maintained weight, and 92.9% (701/754) lost weight.
Partridge, 2015 & Partridge, 2016 Australia 2 arms: Intervention versus control BMI, weight BMI: Mean difference between intervention and control at 3 months: −0.40 [−0.91, 0.11]