Most babies admitted to the NICU are premature (born before 37 weeks of pregnancy), have low birth weight (less than 5.5 pounds), or have a medical condition that requires special care.
Independent variable. An independent variable is used in statistics to predict or explain a dependent variable. For example, Age and Gender might be used as independent variables to predict the age of death or life expectancy (dependent variables). In experimental designs, the independent variables are manipulated by the researcher (e.g., different dosages of a drug).
In this function, y is the dependent variable and x is the independent variable. Variable used in an experiment or modelling can be divided into three types:  dependent variable ,  independent variable , or other. The dependent variable represents the output or effect, or is tested to see if it is the effect.The independent variable represents the input or cause, or is tested to see if it is the cause. Other variables may also be observed for various reasons.he dependent variable represents the output or effect, or is tested to see if it is the effect. The independent variable represents the input or cause, or is tested to see if it is the cause. Other variables may also be observed for various reasons.