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Table 4 Intervention and Control Characteristics, Outcomes, Follow-up Time Points and Key Findings for a Single Study Investigating the Effects of Mobile Phone-based Communications

From: A systematic review to assess the effectiveness of technology-based interventions to address obesity in children

Authors & yearInterventionsIntervention intensity & durationOutcomesFollow-up time pointsKey findingsWeight-related outcomesMean differenceP-value*
Nguyen et al., 20131) Behavioural lifestyle programme plus:
telephone/ SMS/email
2) Programme only
2 years
During Phase 2 (22 months) adolescents received 14 telephone coaching sessions and 32 SMS +/ emails
1) Weight
2) BMI
3) BMI z-score
4) WC
5) WHtR
6) SBP & DBP
7) Metabolic profile
8) Self-reported psychosocial and lifestyle changes
2 months (end of Phase 1)
12 months
24 months (end of Phase 2)
- In both arms the programme produced statistically significant reductions in BMI z-score, WHtR and several metabolic and psychosocial improvements
- Compared to the programme alone, the additional communication had no statistically significant impact on outcomes
Body weight (kg)−2.1 (−7.14, 2.94)0.42
BMI (kg/m2)−1.0 (−2.45, 0.45)0.18
BMI z-score−1.0 (−0.24, 0.04)0.18
WC (cm)−0.5 (−4.36, 3.36)0.18
WHtR0.00 (−0.02, 0.02)1
  1. Abbreviations - SMS short message service, BMI body mass index, WC waist circumference, WHtR waist to height ratio, SBP systolic blood pressure, DBP diastolic blood pressure
  2. *P-values in bold are statistically significant at 5% significance level