Researchers are encouraged to use DDA when investigating group differences on multiple correlated dependent variables to determine which variables contributed to group differences.

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Purpose: To examine if vitamin D deficiency was associated with poor sleep quality in a sample of African American and Hispanic pregnant women. We also examined if race moderates the relationship between serum 25(OH)D levels and sleep quality among participants in this sample. Study Design and Methods: Using a cross-sectional design, a sample of 115 African American and Hispanic pregnant women were enrolled from a federally qualified health center in the Midwest. Women completed questionnaires and had blood drawn for serum 25(OH)D levels between 24- and 32 weeks gestation. The questionnaires included demographic characteristics, the Pittsburgh Sleep Quality Index, and dietary vitamin D and calcium intake. Results: The overall regression model indicated that the predictors explained 17% of variance in sleep quality (F (5, 103) = 4.10, p = .002, R 2 = 0.17). Serum 25(OH)D levels were significant predictors of sleep quality after controlling for covariates (i.e., race, maternal age, prepregnancy body mass index, gestational age at data collection). Race did not moderate the association between serum 25(OH)D levels and sleep quality among women in this sample. Clinical Implications: Pregnant women should be screened for vitamin D deficiency. Women who have vitamin D deficiency should be provided vitamin D supplementation. Vitamin D supplementation may be a simple solution to enhance sleep quality at this critical time in a woman's life.

SDM may be enhanced where nurse management shares relevant information with the DCWs, listens to their ideas, provides explanations when DCW suggestions are not used, and does so in a supportive environment. Organizational characteristics of importance include linking wages to DCW performance and providing an accessible training program.

Adolescents trying to lose weight reported the lowest psychological well-being scores whereas those not doing anything to control weight reported the highest levels of psychological well-being. These findings have important implications for screening and education programs designed to monitor and support adolescent psychological well-being.