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. Author manuscript; available in PMC: 2014 Mar 1.
Published in final edited form as: J Sch Health. 2013 Mar;83(3):182–193. doi: 10.1111/josh.12014

Table 2.

Intervention Effect on Physiologic Outcomes

2 months 6 months
Baseline Mean (SD) Unadjusted Mean Change (SD) Adjusted Mean Change* (95% CI) Adjusted Mean Difference in Change* (95% CI) p-value* Unadjusted Mean Change (SD) Adjusted Mean Change* (95% CI) Adjusted Mean Difference in Change* (95% CI) p-value*
BMI p < .819 p < .676
 Control 31.24 (5.33) 0.14 (1.14) 0.12 (−0.37, 0.61) 0.26 (1.59) 0.23 (−0.46, 0.91)
 Intervention 32.78 (5.91) 0.01 (1.64) 0.03 (−0.45, 0.51) −0.09 (−0.82, 0.65) −0.01 (1.98) 0.01 (−0.66, 0.68) −0.22 (−1.23, 0.80)
BMIZ p < .781 p < .736
 Control 1.81 (0.41) 0.01 (0.11) 0.01 (−0.04, 0.07) 0.01 (0.17) 0.01 (−0.06, 0.08)
 Intervention 1.95 (0.44) 0.00 (0.17) 0.00 (−0.05, 0.05) −0.01 (−0.09, 0.07) 0.00 (0.21) 0.00 (−0.07, 0.07) −0.02 (−0.12, 0.09)
Waist Circumference(cm) p < .503 N=81 p < .504
 Control 98.27 (11.56) 1.33 (4.14) 1.58 (−0.13, 3.29) 0.70 (5.22) 0.88 (−1.30, 3.06)
 Intervention 99.73 (13.79) 0.98 (4.45) 0.72 (−0.96, 2.40) −0.86 (−3.38, 1.66) −0.05 (6.59) −0.22 (−2.35, 1.91) −1.10 (−4.34, 2.13)
% Body Fat p < .733 p < .391
 Control 37.95 (7.86) −0.44 (2.64) −0.48 (−1.67, 0.71) −1.02 (3.54) −1.17 (−2.74, 0.40)
 Intervention 37.93 (9.32) −0.82 (4.68) −0.79 (−1.96, 0.37) −0.31 (−2.09, 1.47) −0.26 (5.91) −0.14 (−1.67, 1.39) 1.03 (−1.32,3.37)
Systolic BP p < .314 p < .272
 Control 116.28 (9.90) −2.33 (10.49) −2.43 (−5.74, 0.87) 4.16 (12.30) 4.80 (1.31, 8.29)
 Intervention 117.74 (10.00) −0.01 (13.09) 0.11 (−3.11, 3.32) 2.54 (−2.41, 7.48) 2.49 (12.61) 1.88 (−1.53, 5.28) −2.93 (−8.14, 2.29)
Diastolic BP p < .958 p < .622
 Control 70.34 (7.24) 0.66 (8.03) 1.12 (−2.16, 4.40) −1.49 (10.09) −0.64 (−3.26, 1.98)
 Intervention 68.96 (8.20) 1.25 (8.57) 0.99 (−2.24, 4.22) −0.13 (−4.93, 4.67) 1.12 (9.88) 0.35 (−2.21, 2.90) 0.98 (−2.93, 4.90)
*

Adjusted for school, age, gender, baseline measurement and the following baseline variables: participation in free lunch program, confidence score, soda consumption, barriers to exercise score.