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. Author manuscript; available in PMC: 2013 Sep 1.
Published in final edited form as: J Nutr Educ Behav. 2012 Jul 4;44(5):464–468. doi: 10.1016/j.jneb.2012.04.005

Table 1.

Sample characteristics and associations with milk consumption stages of change

Sample Combined Stage of Change
(n = 75) No Readiness
To Change
(n = 18)
Readiness 2
Cups
(n = 16)
Readiness 2 &
4 Cups
(n = 41)
P-
value
Demographics
 Age (years; Mean [SD]) 14.2 (2.4) 14.9 (2.9) 13.3 (2.4) 14.2 (2.2) 0.16
 Race 0.17
  White 75%, 56 61%, 11 69%, 11 83%, 34
  Non-White 25%, 19 39%, 7 31%, 5 17%, 7
 Gender 0.13
  Male 48%, 36 50%, 9 69%, 11 39%, 16
  Female 52%, 39 50%, 9 31%, 5 61%, 25
 Household Composition 0.75
  2 Parent Home 83%, 62 78%, 14 88%, 14 83%, 34
  Other 17%, 13 22%, 4 12%, 2 17%, 7
 School Achievement 0.52
  Mostly A’s/B’s 76%, 57 67%, 12 75%, 12 81%, 33
  Other 24%, 18 33%, 6 25%, 4 19%, 8
Clinical Characteristics
 Primary Diagnosis 0.95
  Leukemia 52%, 39 50%, 9 50%, 8 46%, 19
  Other Type 48%, 36 50%, 9 50%, 8 54%, 22
 Years Since Diagnosis
  (Mean [SD])
9.0 (3.4) 8.2 (3.5) 9.4 (3.3) 9.1 (3.4) 0.57
Theoretical Predictors
 Bone Health Knowledge
  (Mean, [SD])
2.9 (0.9) 2.1 (1.2) 2.3 (1.1) 2.3 (1.1) 0.72
 Calcium Self-Efficacy
  (Mean, [SD])
38.9 (7.9) 36.6 (8.0) 39.1 (6.5) 39.7 (8.2) 0.37
Behavioral Predictors
 Milk Consumption
  Frequency
  (Mean, [SD])a
2.1 (0.89) 2.4 (0.85)1 2.7 (0.95)1 3.3 (0.74)2 <.001
 Normal Day ≥ 4 Glasses of
  Milk
28%, 21 6%, 1 19%, 3 42%, 17 0.01
 Meets Recommended
  Calcium Intakeb
27%, 20 6%, 1 19%, 3 39%, 16 0.02
 Calcium Intake (mg)
  (Mean, [SD])a
991.0
(509.0)
702.5
(346.4)1
945.4
(502.1)1,2
1135.4
(523.6)2
0.006

Note. Unless noted, cells display % and n. SD = Standard Deviation.

a

Means with different superscript numbers differ at p < 0.05 after adjustment for multiple comparisons.

b

P-value from Fisher’s exact χ2