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Table 4 Mean (SE) changes in child BMI percentile and BMI z-score from Autumn to Spring by year and group allocation

From: Healthy apple program to support child care centers to alter nutrition and physical activity practices and improve child weight: a cluster randomized trial

Year

Baseline

Implementation year 1

Follow-up

Implementation year 2

2011–2012

2012–2013

2013–2014

2014–2015

Group allocation

CCHP +HAP

(n = 522)

CCHP +HAP Delayed

(n = 380)

CCHP +HAP

(n = 430)

CCHP +HAP Delayed

(n = 361)

CCHP +HAP

(n = 529)

CCHP +HAP Delayed (n = 416)

CCHP +HAP

(n = 502)

CCHP +HAP Delayed

(n = 353)

HAP exposure

No

No

Yes

No

No

No

Yes

Yes

Change in BMI percentile

 Age, y

  2–5

1.7 (0.6)

1.0 (0.7)

−2.2 (0.7)

−0.4 (0.7)

−2.7 (0.6)

−0.1 (0.6)

−0.7 (0.7)

−2.1 (0.7)

  3

1.2 (1.0)

2.7 (1.2)

−2.5 (1.1)

0.9 (1.1)

−2.1 (1.0)

0.1 (0.9)

−0.3 (1.0)

−1.6 (1.2)

  4

1.2 (0.8)

−0.7 (0.9)

−1.6 (0.9)

−2.1 (0.9)

−3.1 (0.8)

−0.9 (0.0)

−0.3 (1.0)

−1.1 (1.0)

Change in BMI z-score

 Age, y

  2–5

0.05 (0.02)

0 (0.02)

−0.1 (0.02)

−0.03 (0.03)

−0.1 (0.02)

−0.02 (0.02)

−0.04 (0.02)

−0.09 (0.02)

  3

0.03 (0.03)

0.05 (0.04)

−0.1 (0.04)

0.01 (0.04)

−0.08 (0.04)

0 (0.03)

−0.04 (0.04)

−0.08 (0.05)

  4

0.03 (0.03)

−0.06 (0.03)

−0.1 (0.03)

−0.1 (0.04)

−0.1 (0.03)

−0.05 (0.04)

−0.02 (0.04)

−0.06 (0.03)

  1. Study time was defined according to academic calendar year. CCHP Child Care Health Program, HAP Healthy Apple Program; Child care centers were randomly allocated to the CCHP + HAP or CCHP + HAP Delayed group in Autumn 2012; n: number of children; BMI: Body mass index; Mean changes are unadjusted. All ages (2-5y) are included in the analysis. Age-specific estimates for age 2 and age 5 are not shown, due to small numbers (n < 5)