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Table 1 Characteristics of study participants randomised at baseline (n = 247) comparing dietary feedback and text messages, dietary feedback only and control group

From: The connecting health and technology study: a 6-month randomized controlled trial to improve nutrition behaviours using a mobile food record and text messaging support in young adults

  Feedback + Text (n = 82) Feedback only (n = 83) Control (n = 82)
Men 29 28 28
Women 53 55 54
Mean ± SD
 Age (years) 24.2 ± 3.2 23.7 ± 3.4 25.0 ± 3.5
 Height (cm) 168.8 ± 10.1 168.9 ± 9.1 170.9 ± 8.8
 Weight (kg) 67.9 ± 14.1 70.4 ± 17.7 71.9 ± 17.6
 Body Mass Index (kg/m2) 23.8 ± 4.1 24.7 ± 6.2 24.6 ± 5.6
BMI category (%)
 Underweight < 18.5 (kg/m2) 11.0 12.0 4.9
 Healthy weight 18 .5–24.9 (kg/m2) 58.5 50.6 65.9
 Overweight 25–29.9 (kg/m2) 20.7 25.3 13.4
 Obese ≥ 30(kg/m2) 9.8 12.0 15.9
Ethnicity (%)
 White 76.8 77.1 78.0
 Aboriginal 0.0 1.2 3.7
 Asian 23.2 12.0 14.6
 Pacific Islander 0.0 0.0 0.0
 Black 0.0 1.2 0.0
 Mixed race 0.0 7.2 3.7
Level of Education (%)
 Year 12 or lower 31.7 41.0 35.4
 Trade or diploma 25.6 27.7 19.5
 Bachelor degree or higher 42.7 31.3 45.1
Alcohol status (%)
 Never drink alcohol 14.8 14.5 8.5
 1–4 times a month 59.3 54.2 62.2
 2 or more times a week 25.9 31.3 29.3
Smoking status (%)
 Never smoked 65.4 69.9 70.7
 Former smoker 28.4 26.5 23.2
 Current smoker 6.2 3.6 6.1
Physical Activity mean ± SD
 Total MET minutes per week 2814 ± 2876 2926 ± 3073 3155 ± 2844
Importance of eating a healthy diet mean ± SDb
 Score 7.6 ± 1.6 7.3 ± 1.6 7.8 ± 1.5
Food group servings (mean daily serves ± SD)a
 Fruit serves (150 g) 1.1 ± 1.1 1.0 ± 1.1 0.9 ± 0.8
 Vegetable serves (75 g) 2.0 ± 1.0 1.7 ± 0.9 1.9 ± 1.1
 EDNP food serves 3.1 ± 1.5 3.3 ± 1.8 3.1 ± 1.7
 EDNP (sugar-sweetened) beverages 0.5 ± 0.6 0.5 ± 0.7 0.4 ± 0.5
 Alcohol serves 0.6 ± 0.8 0.7 ± 1.3 0.5 ± 0.7
 Total EDNP food & beverages 4.2 ± 1.9 4.5 ± 2.7 4.0 ± 2.1
  1. aServing sizes based on Australian Guide to Health Eating (AGHE). EDNP serves ~ 600 kilojoules equivalents
  2. bQuestion was ‘How important is eating a healthy diet to you?’used a 10 point rating from zero ‘not at all important’ to 10 ‘very important’