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Background: Studies revealed unidirectional associations between frailty and medication‐related problems (MRPs) among older adults. Less is known about the association between frailty and the risk of MRPs. We aimed to assess the bi‐directional association between frailty and the risk of MRPs in community‐dwelling older adults in five European countries. Methods: Participants were 1785 older adults in the population‐based Urban Health Centres Europe project. Repeated assessments were collected at baseline and one‐year follow‐up, including frailty, the risk of MRPs, and covariates. Linear regression analyses were conducted to examine the unidirectional associations. A cross‐lagged panel modeling was used to assess bi‐directional associations. Results: The unidirectional association between frailty at baseline and the risk of MRPs at follow‐up remained statistically significant after adjusting for covariates (β = 0.10, 95%CI:0.08, 0.13). The association between the risk of MRPs at baseline and frailty at follow‐up shows similar trends. The bi‐directional association was comparable with reported unidirectional associations, with a stronger effect from frailty at baseline to the risk of MRPs at follow‐up than reversed path (Wald test for comparing lagged effects: p < 0.05). Conclusion: This longitudinal study suggests that a cycle may exist where older adults with higher frailty levels are more likely to have a higher risk of MRPs, which in turn contributes to developing a higher level of frailty. Further research is needed to validate our findings and explore underlying pathways. [ABSTRACT FROM AUTHOR]

Many researchers and practitioners consider ethnic segregation in neighbourhoods or schools detrimental to migrants' acculturation in host societies. Empirically, however, segregation is a 'mixed bag' and its effects depend crucially on the investigated acculturation domain (e.g., negative for language skills, positive for well‐being). As most prior studies have focused on a restricted spectrum of acculturation, a comprehensive assessment within one single study is needed to establish comparability across different acculturation domains. Among over 8000 immigrant‐background students from four countries, we investigated the association of classroom segregation, defined as opportunities for contact with natives and other migrants, with a broad spectrum of acculturation (academic, attitude‐related, identity‐related, social, health‐related, and psychological criteria). Some findings were consistent (e.g., academic acculturation), some were contrary to prior research (e.g., social acculturation). In sum, our results shed light on the 'mixed bag' of segregation and contribute to the understanding of a crucial social issue. [ABSTRACT FROM AUTHOR]

Summary: Background: Anthropometry‐based equations are commonly used to estimate infant body composition. However, existing equations were designed for newborns or adolescents. We aimed to (a) derive new prediction equations in infancy against air‐displacement plethysmography (ADP‐PEA Pod) as the criterion, (b) validate the newly developed equations in an independent infant cohort and (c) compare them with published equations (Slaughter‐1988, Aris‐2013, Catalano‐1995). Methods: Cambridge Baby Growth Study (CBGS), UK, had anthropometry data at 6 weeks (N = 55) and 3 months (N = 64), including skinfold thicknesses (SFT) at four sites (triceps, subscapular, quadriceps and flank) and ADP‐derived total body fat mass (FM) and fat‐free mass (FFM). Prediction equations for FM and FFM were developed in CBGS using linear regression models and were validated in Sophia Pluto cohort, the Netherlands, (N = 571 and N = 447 aged 3 and 6 months, respectively) using Bland–Altman analyses to assess bias and 95% limits of agreement (LOA). Results: CBGS equations consisted of sex, age, weight, length and SFT from three sites and explained 65% of the variance in FM and 79% in FFM. In Sophia Pluto, these equations showed smaller mean bias than the three published equations in estimating FM: mean bias (LOA) 0.008 (−0.489, 0.505) kg at 3 months and 0.084 (−0.545, 0.713) kg at 6 months. Mean bias in estimating FFM was 0.099 (−0.394, 0.592) kg at 3 months and −0.021 (−0.663, 0.621) kg at 6 months. Conclusions: CBGS prediction equations for infant FM and FFM showed better validity in an independent cohort at ages 3 and 6 months than existing equations. [ABSTRACT FROM AUTHOR]

OBJECTIVES To examine the longitudinal association between frequency of moderate physical activity (PA) and overall, physical, psychological, and social frailty among community‐dwelling older adults older than 70 years. Second, we assessed the association between a 12‐month change in frequency of moderate PA and frailty. DESIGN Longitudinal cohort study. SETTING Community settings in Spain, Greece, Croatia, the Netherlands, and the United Kingdom. PARTICIPANTS A total of 1735 participants (61.1% female; mean age = 79.6 years; SD = 5.5 years). MEASUREMENTS The frequency of self‐reported moderate PA was measured and classified into two categories: "regular frequency" and "low frequency." The 12‐month change in frequency of moderate PA between baseline and follow‐up was classified into four categories: "continued regular frequency," "decreased frequency," "continued low frequency," and "increased frequency." The 15‐item Tilburg Frailty Indicator assessed overall, physical, psychological, and social frailty. RESULTS: Participants who undertook moderate PA with a regular frequency at baseline were less frail at 12‐month follow‐up than participants with a low frequency. Participants who undertook moderate PA with a continued regular frequency were least frail at baseline and at 12‐month follow‐up. After controlling for baseline frailty and covariates, compared with participants with a continued regular frequency, participants with a decreased frequency were significantly more overall (B = 1.31; 95% confidence interval [CI] = 0.99‐1.63), physically (B = 0.80; 95% CI = 0.58‐1.03), psychologically (B = 0.43; 95% CI = 0.30‐0.56), and socially frail (B = 0.14; 95% CI = 0.04‐0.23) at 12‐month follow‐up; participants with a continued low frequency were significantly more overall (B = 1.16; 95% CI = 0.84‐1.49), physically (B = 0.73; 95% CI = 0.51‐0.96), psychologically (B = 0.42; 95% CI = 0.29‐0.55), and socially frail (B = 0.13; 95% CI = 0.04‐0.23) at 12‐month follow‐up; the 12‐month follow‐up frailty level of participants who undertook moderate PA with an increased frequency was similar to those with a continued regular frequency. CONCLUSION: Maintaining a regular frequency of PA as well as increasing to a regular frequency of PA are associated with maintaining or improving overall, physical, psychological, and social frailty among European community‐dwelling older adults older than 70 years. J Am Geriatr Soc 68:1484‐1493, 2020. [ABSTRACT FROM AUTHOR]

Aims To estimate associations between smoking initiation, smoking persistence and smoking heaviness and caffeine consumption in two population-based samples from the Netherlands and the United Kingdom. Design Observational study employing data on self-reported smoking behaviour and caffeine consumption. Setting Adults from the general population in the Netherlands and the United Kingdom. Participants Participants from the Netherlands Twin Register [NTR: n = 21 939, mean age 40.8, standard deviation (SD) = 16.9, 62.6% female] and the Avon Longitudinal Study of Parents and Children (ALSPAC: n = 9086, mean age 33.2, SD = 4.7, 100% female). Measurements Smoking initiation (ever versus never smoking), smoking persistence (current versus former smoking), smoking heaviness (number of cigarettes smoked) and caffeine consumption in mg per day through coffee, tea, cola and energy drinks. Findings After correction for age, gender (NTR), education and social class (ALSPAC), smoking initiation was associated with consuming on average 52.8 [95% confidence interval (CI) = 45.6-60.0; NTR] and 59.5 (95% CI = 51.8-67.2; ALSPAC) mg more caffeine per day. Smoking persistence was also associated with consuming more caffeine [+57.9 (95% CI = 45.2-70.5) and +83.2 (95% CI = 70.2-96.3) mg, respectively]. Each additional cigarette smoked per day was associated with 3.7 (95% CI = 1.9-5.5; NTR) and 8.4 (95% CI = 6.9-10.0; ALSPAC) mg higher daily caffeine consumption in current smokers. Smoking was associated positively with coffee consumption and less strongly with cola and energy drinks. For tea, associations were positive in ALSPAC and negative in NTR. Conclusions There appears to be a positive association between smoking and caffeine consumption in the Netherlands and the United Kingdom. [ABSTRACT FROM AUTHOR]