Background
Despite increasing concern about the quality of life of older adults, little is known about characteristics associated with health risk behaviors among older adults in middle-income countries. This study relied on unique longitudinal data to examine the relationship between sociodemographic characteristics and alcohol use among low-income older adults, one of the fastest-growing populations worldwide.

Methods
This multilevel longitudinal analysis involved three waves of data (2008–2010) from 2,351 adults aged 70 or older in Yucatán, Mexico. Multilevel regressions models were used to test interactions among gender, speaking Mayan (indigenous language), and socioeconomic status to understand conditions associated with the odds of current alcohol use and the frequency and amount of alcohol use.

Results
Half of the participants in this study report consuming alcohol in their lifetime, 21.58 % of whom were current alcohol users. Older adults reported consuming alcohol 1.15 days a week and 1.60 drinks per day. Speaking Mayan was associated with lower odds of current alcohol use. However, men who spoke Mayan reported higher odds of drinking alcohol compared to women and non-Mayan (Spanish) speakers. The positive relationship between socioeconomic status and alcohol use was also moderated by gender (male).

Conclusions
Findings show that older and Mayan populations had lower odds of drinking in Yucatán, Mexico, whereas men were at highest risk of drinking alcohol, after adjusting for ethnic culture and socioeconomic status. Implications for health policy and epidemiological studies on substance use among older adults residing in low-income settings are discussed.