Participation Retention Plan
This is a prospective cohort study. Participants are asked to submit their 7-day food diary every month for three months. After participant completes baseline interview, the coordinators= would ask participants to leave the most convenient phone number that they can send them reminder text messages at the beginning of each month. A package will be shipped to participant’s permanent address every month for three months. The package consists of a blank food diary, and a USPS envelope. Coordinators will mail a gift card to the participant who mail back their completed 7-day food diary.
Study Participation Incentives
Participant will receive a 20-dollar VISA gift card after he/she completes baseline screening and signs …show more content…
Gram/day and milligram/day are the standard units used in national report and other prospective studies for fiber and magnesium intake.
Outcomes variable is the likelihood of glycemic control. A hemoglobin A1c (HbA1C) level equals to or less than 5.7% is considered as normal glycemic level, which indicates controlled blood glucose. A hemoglobin A1c (HbA1C) level greater than 5.7% is considered as abnormal glycemic level, which indicates uncontrolled blood glucose.
Reasons for dichotomization of outcome values: (1) It is a clinically meaningful cut point. According to clinical evidence, pre-diabetic people with HbA1C level lower than 5.7% indicates that they are able to maintain glucose homeostasis and have lower risk of T2DM. Pre-diabetic people with HbA1C level greater than 5.7% indicates that they are unable to maintain glucose homeostasis and higher risk of T2DM. (2) Other researchers have typically used dichotomized values to determine the glycemic control.
Covariates include age, gender, family history, daily carbohydrate intake, Body Mass Index (BMI), and levels of physical
This is a prospective cohort study. Participants are asked to submit their 7-day food diary every month for three months. After participant completes baseline interview, the coordinators= would ask participants to leave the most convenient phone number that they can send them reminder text messages at the beginning of each month. A package will be shipped to participant’s permanent address every month for three months. The package consists of a blank food diary, and a USPS envelope. Coordinators will mail a gift card to the participant who mail back their completed 7-day food diary.
Study Participation Incentives
Participant will receive a 20-dollar VISA gift card after he/she completes baseline screening and signs …show more content…
Gram/day and milligram/day are the standard units used in national report and other prospective studies for fiber and magnesium intake.
Outcomes variable is the likelihood of glycemic control. A hemoglobin A1c (HbA1C) level equals to or less than 5.7% is considered as normal glycemic level, which indicates controlled blood glucose. A hemoglobin A1c (HbA1C) level greater than 5.7% is considered as abnormal glycemic level, which indicates uncontrolled blood glucose.
Reasons for dichotomization of outcome values: (1) It is a clinically meaningful cut point. According to clinical evidence, pre-diabetic people with HbA1C level lower than 5.7% indicates that they are able to maintain glucose homeostasis and have lower risk of T2DM. Pre-diabetic people with HbA1C level greater than 5.7% indicates that they are unable to maintain glucose homeostasis and higher risk of T2DM. (2) Other researchers have typically used dichotomized values to determine the glycemic control.
Covariates include age, gender, family history, daily carbohydrate intake, Body Mass Index (BMI), and levels of physical