Key result
Higher income and positive affect predicted lower levels of HbA1c over 2 years in older women without diabetes, with well-being moderating the income-HbA1c relationship.
Why the study?
Do socioeconomic status and psychological well-being predict changes in HbA1c in older women without diabetes?
Cohort (n=97)
No
Do socioeconomic status and psychological well-being predict changes in HbA1c in older women without diabetes?
Higher income and positive psychological well-being predict lower HbA1c levels over time in older women without diabetes.
Should not yet alter glycemic monitoring; leaves open whether well-being interventions modify income-HbA1c links in older women.
OBJECTIVE: To investigate whether socioeconomic status and psychological well-being (eudaimonic and hedonic aspects) predicted nondiabetic levels of glycosylated hemoglobin (HbA1c) over time, after adjusting for covariates and baseline level of HbA1c. METHODS: These questions were investigated with a longitudinal sample (n = 97; age = 61-91 years) of older women without diabetes. Socioeconomic status, well-being, and health behaviors were assessed using self-administered questionnaires. Fasting blood samples for assays of HbA1c were obtained before 7 AM during the respondents' overnight stay at the General Clinical Research Center at the University of Wisconsin-Madison. All measurements were obtained at baseline and 2-year follow-up. RESULTS: Regression analyses showed that higher income and positive affect predicted lower levels of HbA1c, after controlling for baseline HbA1c and health factors. Additionally, three well-being measures (purpose in life, personal growth, and positive affect) moderated the relationship between income and HbA1c. CONCLUSION: These results suggest that psychological well-being and socioeconomic status interact in important ways in influencing nondiabetic glucose metabolism.
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Tsenkova et al. (2007) conducted a cohort in without diabetes (n=97). Socioeconomic status and psychological well-being was evaluated on nondiabetic levels of glycosylated hemoglobin (HbA1c) over time. Higher income and positive affect predicted lower levels of HbA1c over 2 years in older women without diabetes, with well-being moderating the income-HbA1c relationship.
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