Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20007, USA.
J Nutr Educ Behav. 2012 Sep-Oct;44(5):464-8. doi: 10.1016/j.jneb.2012.04.005. Epub 2012 Jul 4.
To assess the construct validity of a milk consumption Stages of Change (SOC) algorithm among adolescent survivors of childhood cancer ages 11 to 21 years (n = 75).
Baseline data from a randomized controlled trial designed to evaluate a health behavior intervention were analyzed. Assessments included a milk consumption SOC algorithm and hypothesized theoretical and behavioral predictors of SOC.
Compared with survivors who expressed no readiness to change, those expressing readiness to change behavior for both 2 and 4 daily servings of milk reported more frequent milk consumption (P < .001), greater dietary calcium intake (P = .006), and were more likely to meet age-specific recommendations for daily calcium intake (P = .01).
Results provide support for the construct validity of the milk consumption SOC algorithm relative to behavioral criteria. Research is needed to further examine algorithm validity with respect to theoretical predictors of SOC.
评估青少年癌症幸存者（年龄 11 至 21 岁）的牛奶摄入量变化阶段（SOC）算法的构建效度（n=75）。
对一项旨在评估健康行为干预的随机对照试验的基线数据进行了分析。评估包括牛奶摄入量 SOC 算法以及 SOC 的假设理论和行为预测因素。
与表示没有改变行为意愿的幸存者相比，表达愿意改变每天摄入 2 份和 4 份牛奶的意愿的幸存者报告了更频繁的牛奶摄入（P<.001），更高的膳食钙摄入量（P=.006），并且更有可能符合特定年龄的每日钙摄入量建议（P=.01）。
结果为牛奶摄入量 SOC 算法相对于行为标准的构建效度提供了支持。需要进一步研究算法有效性，以了解 SOC 的理论预测因素。
