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Table 2 Adjusted baseline to 12 months mean changea in behavioural outcomes with and without behavioural screening

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 = 431)

(n = 324)

(n = 394)

(n = 299)

Physical activity (minutes/week)

   

Telephone Counselling (TC)

71.16 (14.28)***

113.15 (13.96)*** c

62.03 (15.02)***

103.27 (14.35)***

   Usual Care (UC)

84.48 (14.92)***

78.46 (14.71)***

86.00 (15.65)***

76.15 (15.14)***

   TC - UC

-13.32 (-53.91, 27.26)

34.70 (-5.22, 74.61) Δ

-23.96 (-66.60, 18.67) Δ

27.12 (-13.95, 68.19) Δ

Fruit intake (servings/day)

    

   TC

0.50 (0.06)***

0.49 (0.07)***

0.52 (0.06)***

0.49 (0.07)***

   UC

0.20 (0.06)**

0.23 (0.07)**

0.23 (0.07)**

0.28 (0.08)**

   TC - UC

0.30 (0.12, 0.47)

0.26 (0.07, 0.46) Δ

0.29 (0.10, 0.47)

0.21 (+0.00, 0.42) Δ

Vegetable intake (servings/day)

   

   TC

1.05 (0.24)***

0.95 (0.26)***

1.21 (0.23)***

1.13 (0.24)***

   UC

0.34 (0.25)

0.25 (0.26)

0.53 (0.23)

0.43 (0.25)

   TC - UC

0.71 (0.03, 1.39)

0.70 (-0.03, 1.39)

0.68 (0.04, 1.32)

0.70 (0.02, 1.39)

 

(n = 426)b

(n = 320)b

(n = 389)b

(n = 295)b

Total fat intake (% calories)

    

   TC

-1.98 (0.25)***

-1.95 (0.35)***

-2.06 (0.30)***

-1.99 (0.34) ***

   UC

-0.83 (0.31)**

-1.01 (0.36)**

-0.93 (0.31)**

-1.12 (0.36)**

   TC - UC

-1.15 (-1.98, -0.32)

-0.94 (-1.93, 0.05) Δ

-1.13 (-1.98, -0.28)

-0.87 (-1.84, 0.11) Δ

Saturated fat intake (% calories)

    

   TC

-1.57 (0.25)***

-1.60 (0.27)***

-1.59 (0.26)***

-1.65 (0.28)***

   UC

-0.60 (0.26)*

-0.66 (0.27)*

-0.63 (0.27)*

-0.70 (0.29)*

   TC - UC

-0.97 (-1.68, -0.26)

-0.94 (-1.69, -0.19)

-0.97 (-1.71, -0.23)

-0.95 (-1.74, -0.16)

Fibre intake (g/day)

    

   TC

1.83 (0.46)***

1.52 (0.57)*

2.06 (0.48)***

1.74 (0.57)**

   UC

-0.40 (0.48)

-0.63 (0.59)

0.19 (0.50)

-0.02 (0.60)

   TC - UC

2.23 (0.93, 3.53)

2.15 (0.54, 3.77)

1.87 (0.50, 3.24) Δ

1.76 (0.12, 3.40) Δ

  1. a Adjusted means (standard error or 95% CI) of change from baseline to 12-months (adjusted for baseline values), with random intercepts for practice and subject.
  2. b Sample size differs due to the exclusion of participants with invalid data from the food frequency questionnaire.
  3. c Bold cells represent behaviours predicted to be impacted by screening
  4. Δ Substantial change (≥10%) in intervention effects when behavioural screening is employed compared to when it is not.
  5. * p < 0.05 (for change from baseline)
  6. ** p < 0.01
  7. *** p < 0.001
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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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