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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