The sex ratio (SR) is usually defined as the number of males per 100 females within an area or, as in this study, the proportion of males among all births (PM). It has been observed that among newborns, there is typically a slight excess number for boys compared to girls. Consequ...
Open access
Research Article10.9734/ajpas/2018/v1i124502
Knowledge of the seasonal variation in births and deaths during normal years is important for analyses of the effects of wars, famines, epidemics or similar privations on these variables. In studies of seasonality, multiple trigonometric regression models are more flexible than t...
Open access
Research Article10.9734/BJMMR/2016/21965
A long series of attempts have been made to identify factors influencing the number of males per 100 females at birth, also called the secondary sex ratio (SR). Earlier studies have noted regional variations in the secondary SR, and racial differences seem to exist. Statistical a...
Open access
Research Article10.9734/BJAST/2015/18393
We analysed geographic variation in the number of males per 100 females at birth also called the secondary sex ratio (SR), the crude birth rate (CBR), the total fertility rate (TFR) and the twinning rate (TWR). Earlier studies have noted geographic variations in the TWR and racia...
Open access
Research Article10.9734/BJMMR/2015/15182
Aims: Interest in the distribution of birth weight arises because of the association between birth weight and the future health of the child. A common statistical result is that the birth weight distribution differs slightly from the Gaussian distribution. Methods: A standard att...
Open access
Research Article10.9734/BJMMR/2014/6098