The paper examined the impact of temperature and relative humidity escalation on mental health of in-patient and out-patient admitted into Neuropsychiatric Hospital Akure, Ondo State, Nigeria. The main independent variables of interest are temperature and relative humidity covering a period of eight years 2010-2017. Data of in- and out-patients diagnosed with psychiatric cases were sourced from the from the hospital records. The population of the study is 53616 numbers of patients, comprising of 25160 male and 28456 female patients that visited the hospital from the year within the years of study. Data collected were analyzed with used of single regression and multivariate regression analysis using STATA Software. The study found that climate parameters (temperature and relative humidity) as a separate variables and the overlapping effect of the two independent increases the vulnerability of male and female patients to the risk of psychiatric cases and increases the numbers of patient visiting the hospital. There were positive associations between the numbers of male/female patient and the two parameters as well as between the overlapping effects. Male population are more vulnerable to the risks of psychiatric cases as temperature increase while female population were more vulnerable to the risks of psychiatric cases as relative humidity increases. The impact of the overlapping (resultant) effects of the two independent variables is more on the male than the female that were visiting the hospital. Male populations were generally more vulnerable to the risks of psychiatric cases than female as the metabolic rate and brain volume increases with temperature. The vulnerability of male and female population to psychiatric cases was not equally distributed throughout the period of study. Male and female population respond differently to the impact of each parameter throughout those years considered and these are considered to be psychological and physiological factor differences in male and female. Out of a total 53616 numbers patients that visited the hospital between (2010-2017), only 21.28% (11,409) are male patients that were diagnosed with psychiatric cases and all together traceable/attributed to increased temperature, relative humidity and overlapping effect escalation while only 20.02% (10,736) was female that were diagnosed with psychiatric cases and all together traceable/attributed to the increased temperature, relative humidity and overlapping effect escalation. In the overall analysis male population were more vulnerable to the risk of psychiatric cases than female as the two independent variables increases. The effective strength of temperature made the numbers of male/female populations more vulnerable to the risk of psychiatric cases than the effective strength of relative humidity.
Temperature, Relative Humidity, Male and female psychiatric patients
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