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Table 1 Descriptive data of the included apps (n = 25)

From: Apps to improve diet, physical activity and sedentary behaviour in children and adolescents: a review of quality, features and behaviour change techniques

  N (%) M (SD) Md (IQR) Range (min-max)
Store
 iTunes 3 (12) - - -
 Google Play 4 (16) - - -
 iTunes and Google Play 18 (72) - - -
Cost
 Free 15 (60) - - -
 Paid (costs in AUD) 4 (16) 3.49 - 6.50 (1.49–7.99)
 Freemium 6 (24) - - -
User rating
 Average rating (4+) 25 (100) 4.28 (0.26) 4.30 (0.50) 0.80 (4.00–4.80)
 Average number of user ratings (count) 25 (100) 279,611.33 (1,315,200.00) 190.00 (3418) 6,451,103 (22–6,451,125)
Health behaviour
 Diet 12 (48) - - -
 Physical activity 18 (72) - - -
 Sedentary behaviour 7 (28) - - -
App type
 Educational 17 (68) - - -
 Game (serious game, exergame) 13 (52) - - -
 Other 5 (20) - - -
Number of app features (1–10)   4.32 (1.93) 4.00 (3.00) 7.00 (1.00–8.00)
App features specified
 Password required 5 (20) - - -
 Inbuilt accelerometer 9 (36) - - -
 GPS 5 (20) - - -
 Educational information 17 (68) - - -
 Alignment with guidelines 6 (24) - - -
 Social networking option 15 (60) - - -
 Push notifications 8 (32) - - -
 Reminders 6 (24) - - -
 Awards/rewards 17 (68) - - -
 Gamification 21 (84) - - -
Combination with other devices
 None 17 (68) - - -
 Wearable tracker 8 (32) - - -
 Website 4 (16) - - -
Number of BCTs 25 (100) 6.12 (3.38) 6.00 (6) 14 (0–14)
MARS app quality ratings (1–5)
 Engagement score 25 (100) 3.57 (0.73) 3.70 (1.05) 2.70 (2.00–4.70)
 Functionality score 25 (100) 4.10 (0.58) 4.00 (1.00) 1.90 (3.00–4.90)
 Aesthetics score 25 (100) 3.81 (0.81) 3.80 (1.35) 2.80 (2.00–4.80)
 Information quality score 25 (100) 2.79 (0.84) 2.90 (1.20) 3.30 (0.90–4.20)
 Total score 25 (100) 3.57 (0.60) 3.70 (0.85) 2.00 (2.40–4.40)
  1. Abbreviations: App application, BCTs behaviour change techniques, MARS mobile app rating scale, GPS global positioning system, AUD Australian Dollar