%0 Journal Article %T Long-Term Weight Gain and Prevalence of Obesity in General Adult Psychiatric Inpatients %J - %D 2018 %X Weight gain is a common concern in general adult psychiatry. However, there are no extensive and longitudinal studies to show how weight gain variates and if it does so in the inpatient population. We collected the electronic data of the weights from a sample of 186 psychiatric and non-forensic inpatients hospitalized in Essex, United Kingdom, these data being relative to a period from one to ten years. Statistical methods included the coefficient of determination R2 for progressive measures of weight, Cohen¡¯s d for R2, and meta-analysis to calculate the coefficient of heterogeneity I2 of individual R2 and mean weights. Subsequently, the body weights were compared with the national Body Mass Index (BMI = Kg/m2). The results showed that the time variation of body weight was low to medium for male patients (R2 = 0.17; d = 0.44), and medium to high for female patients (R2 = 0.27; d = 0.74). Additionally, the average BMI for female patients was 31.21 (SD = ¡À7.73) corresponding to the WHO Class I Obesity spectrum while for males it was 27.05 (SD = ¡À5.92) corresponding to the WHO Overweight Class spectrum. In conclusion, overweight in males and obesity in females are commonly found in psychiatric non-forensic inpatients. However, in our study, only 27% of the females¡¯ and 17% of the males¡¯ variation in body weight was explained by the time variable. Consequently, one conclusion is that increased BMI might be comorbid with psychiatric disorders although the direction of the reciprocal influence should be investigated %K Psychiatry %K Inpatients %K Body Mass Index %K Obesity %K Weight-Gain %K Meta-Analysis %K Borderline Personality Disorder %U http://www.sciencepublishinggroup.com/journal/paperinfo?journalid=653&doi=10.11648/j.ajpn.20180603.16