Data Analysis
Data from patients as well as health-care providers are expressed as means with standard deviations (SD) or as percentages where appropriate.
Student's f test for continuous variables and chi-square analysis for categorical variables were used to compare patients who became more careful about choosing healthy foods with those that did not.
The same analytical procedures were followed to contrast select variables between health-care providers who did or did not discuss diet with their pregnant patients.
Binary logistic regression analysis was conducted to determine if patients who became more careful about their diet versus those who weren't more likely to have discussed diet with their health-care providers.
In this regression model, the patients' dietary behavior (became more careful vs. did not become more careflil) was the dependent variable and patient demographics (education, insurance type, ethnicity), the number of other health behaviors discussed with their health-care providers, and whether diet was discussed with their health-care providers were the independent variables.
Education was stratified as "high school degree or less" or "more than a high school degree," insurance coverage was stratified as "private insurance" or "Medicaid/no insurance," and ethnicity was dichotomized as "White"or "minority." Another binary logistic regression model was constructed to determine if self-reported characteristics of health-care providers were associated with health-care providers' discussions about diet with their pregnant patients.
Odds ratios along with their 95% confidence intervals(CI) were calculated for all independent variables in the models.
Statistical analyses were performed using Statistical Package for the Social Sciences (SPSS) software (rel. 19, IBM Corp., Armonk, NY).
Data Analysis
Data from patients as well as health-care providers are expressed as means with standard deviations (SD) or as percentages where appropriate.
Student's f test for continuous variables and chi-square analysis for categorical variables were used to compare patients who became more careful about choosing healthy foods with those that did not.
The same analytical procedures were followed to contrast select variables between health-care providers who did or did not discuss diet with their pregnant patients.
Binary logistic regression analysis was conducted to determine if patients who became more careful about their diet versus those who weren't more likely to have discussed diet with their health-care providers.
In this regression model, the patients' dietary behavior (became more careful vs. did not become more careflil) was the dependent variable and patient demographics (education, insurance type, ethnicity), the number of other health behaviors discussed with their health-care providers, and whether diet was discussed with their health-care providers were the independent variables.
Education was stratified as "high school degree or less" or "more than a high school degree," insurance coverage was stratified as "private insurance" or "Medicaid/no insurance," and ethnicity was dichotomized as "White"or "minority." Another binary logistic regression model was constructed to determine if self-reported characteristics of health-care providers were associated with health-care providers' discussions about diet with their pregnant patients.
Odds ratios along with their 95% confidence intervals(CI) were calculated for all independent variables in the models.
Statistical analyses were performed using Statistical Package for the Social Sciences (SPSS) software (rel. 19, IBM Corp., Armonk, NY).
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