biostudies-literatureLe-Scherban FNICHD NIH HHSNCATS NIH HHSNHLBI NIH HHSNIMHD NIH HHS102147https://www.ebi.ac.uk/biostudies/studies/S-EPMC6708458biostudies-literatureUnknown58Weight among immigrants in the United States (US) is lower than among the US-born on average, but higher among long-term immigrants than the newly arrived. Neighborhood coethnic concentration-the proportion of neighborhood residents of the same ethnic background-may influence weight among immigrants via behavioral norms and market-driven community resources. However, the relevant exposure timeframe may be far longer than is captured by existing cross-sectional and short-term studies. Using detailed historical residential address information on 1449 older Latino and Chinese long-term immigrants, we investigated associations of 10-20-year neighborhood coethnic concentration trajectories with current waist circumference and weight-related behaviors (diet, physical activity, and sedentary time). Among Chinese participants, compared to persistent low coethnic concentration, increasing coethnic concentration was associated with higher waist circumference (difference?=?1.45?cm [0.51, 2.39]). In contrast, both increasing coethnic concentration and persistent high coethnic concentration were associated with a healthier diet. Among Latino participants, trajectories characterized by higher coethnic concentration were associated with higher waist circumference (e.g., difference?=?2.11?cm [0.31, 3.91] for persistent high vs. persistent low) and low physical activity. Long-term patterns of neighborhood coethnic concentration may affect weight-related outcomes among immigrants in complex ways that differ by ethnicity and outcome.Health & placeLong-term neighborhood ethnic composition and weight-related outcomes among immigrants: The Multi-Ethnic Study of Atherosclerosis.PMC6708458UL1 TR000040UL1 TR001079UL1 TR001420N01 HC095166N01 HC095165P60 MD002249N01 HC095168N01 HC095167N01 HC095159N01 HC095169N01 HC095160P2C HD041023N01 HC095162N01 HC095161N01 HC095164N01 HC095163R01 HL071759L60 MD009078Albrecht SSLe-Scherban FSanchez BNDiez Roux AVOsypuk TLfalseLong-term neighborhood ethnic composition and weight-related outcomes among immigrants: The Multi-Ethnic Study of Atherosclerosis.Weight among immigrants in the United States (US) is lower than among the US-born on average, but higher among long-term immigrants than the newly arrived. Neighborhood coethnic concentration-the proportion of neighborhood residents of the same ethnic background-may influence weight among immigrants via behavioral norms and market-driven community resources. However, the relevant exposure timeframe may be far longer than is captured by existing cross-sectional and short-term studies. Using detailed historical residential address information on 1449 older Latino and Chinese long-term immigrants, we investigated associations of 10-20-year neighborhood coethnic concentration trajectories with current waist circumference and weight-related behaviors (diet, physical activity, and sedentary time). Among Chinese participants, compared to persistent low coethnic concentration, increasing coethnic concentration was associated with higher waist circumference (difference?=?1.45?cm [0.51, 2.39]). In contrast, both increasing coethnic concentration and persistent high coethnic concentration were associated with a healthier diet. Among Latino participants, trajectories characterized by higher coethnic concentration were associated with higher waist circumference (e.g., difference?=?2.11?cm [0.31, 3.91] for persistent high vs. persistent low) and low physical activity. Long-term patterns of neighborhood coethnic concentration may affect weight-related outcomes among immigrants in complex ways that differ by ethnicity and outcome.2019-01-01T00:00:00Z2019 Jul2020-10-29T13:17:27Z2020-07-04T07:17:59ZS-EPMC67084583123412310.1016/j.healthplace.2019.102147