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Table 1 Baseline characteristics of participants - with and without screening for physical activity, diet, or both.

From: The impact of behavioural screening on intervention outcomes in a randomised, controlled multiple behaviour intervention trial

  All participants (unscreened) Participants included with physical activity screening Participants included with diet screening Participants included with physical activity or diet screening
  (n = 434) (n = 324) (n = 394) (n = 299)
Intervention participation a     
Intervention dose (calls) received
(median, interquartile range, n)
13 (8-16), n = 228 13 (8-16), n = 171 13 (8-16), n = 208 13 (8-16), n = 158
Retention rates, n(%) 341 (78.6) 254 (78.4) 309 (77.8) 230 (76.9)
Health-related characteristics     
Type 2 diabetes, n (%) 197 (45.4) 147 (45.4) 180 (45.3) 137 (45.8)
Hypertension, n (%) 371 (85.5) 280 (86.4) 340 (85.6) 257 (86.0)
Chronic conditions     
1-2 conditions, n (%) 175 (40.3) 125 (38.6) 158 (39.8) 115 (38.5)
3-4 conditions, n (%) 189 (43.5) 141 (43.5) 172 (43.3) 128 (42.8)
5+ conditions, n (%) 70 (16.1) 58 (17.9) 67 (16.9) 56 (18.7)
p b   0.078 0.223 0.052
Body mass index, kg 31.1 (6.8) 31.2 (7.2) 31.1 (6.9) 31.3 (7.2)
Current smoker, n (%) 60 (13.8) 46 (14.2) 56 (14.1) 44 (14.7)
Demographic attributes     
Age, years 58.2 (11.8) 58.4 (11.7) 58.1 (11.8) 58.3 (11.7)
Gender, n (%) Female 265 (61.1) 204 (63.0) 241 (60.7) 188 (62.9)
Ethnicity, n (%) Caucasian 395 (91.0) 294 (90.7) 362 (91.2) 270 (90.3)
Marital status, n (%) Married/living together 309 (71.2) 229 (70.7) 281 (70.8) 210 (70.2)
Education     
Primary or less 88 (20.3) 73 (22.5) 78 (19.6) 66 (22.1)
Junior high school 151 (34.8) 114 (35.2) 136 (34.3) 102 (34.1)
Senior High school 46 (10.6) 36 (11.1) 43 (10.8) 33 (11.0)
Trade or technical diploma 99 (22.8) 67 (20.7) 93 (23.4) 65 (21.7)
University Degree 50 (11.5) 34 (10.5) 47 (11.8) 33 (11.0)
p for trend   0.014 0.118 0.248
Employment, n (%) Retired 157 (36.2) 113 (34.9) 141 (35.5) 103 (34.4)
Weekly household income, n (%) $ ≥1500AUD 75 (20.2) 55 (19.6) 64 (19.0) Δ 48 (18.8)
Physical Activity     
Physical activity (minutes/week)
median (25th, 75th percentile)
60 (0, 210) 0 (0, 70)*** c Δ 60 (0, 210) 0 (0, 75)*** Δ
Physical activity (sessions/week)
median (25th, 75th percentile)
2 (0, 2) 0 (0, 2) *** Δ 2 (0, 2) 0 (0, 2)*** Δ
Diet     
Total fat (% calories) 36.9 (5.2) 37.2 (5.2)* 37.0 (5.2) 37.3 (5.2)*
Saturated fat (% calories) 14.4 (3.3) 14.6 (3.3)** 14.4 (3.4) 14.7 (3.3)**
Fibre intake (grams/day) 21.8 (8.0) 21.8 (7.9) 21.3 (7.4)*** Δ 21.3 (7.6)** Δ
Vegetables (servings/day)     
median (25th, 75th percentile) 3 (2, 4) 3 (2, 4) 3 (2, 4)*** Δ 3 (2, 4)**
Fruit (servings/day)     
median (25th, 75th percentile) 1 (1, 2) 1 (1, 2) Δ 1 (1, 2)*** Δ 1 (1, 2)*** Δ
  1. a Data are given as mean (SD) or N (%) unless otherwise specified.
  2. b Linear-by-linear association chi-square
  3. c Bold cells represent behaviours predicted to be impacted by screening
  4. Δ Substantial difference (≥10%) between included and excluded participants
  5. * p < 0.05 (included participants v excluded participants)
  6. ** p < 0.01
  7. *** p < 0.001