A confidence interval is an interval (i.e., a range of values) estimate of a parameter of a population (e.g., a mean) calculated from a sample drawn from the population. A confidence interval has an associated confidence level, which is frequency with which a calculated confidence interval is expected to contain the population parameter. Confidence intervals are of interest in modeling and simu...

malignant tumor among women in Algeria, breast cancer represents a heterogeneous and multifactorial disease. The current study aimed to determine the risk factors clinicopathological features of from Sidi-Bel-Abbes region, Northwestern Algeria.