<prompt> confidence limits can be calculated using -Mean and rangeMean and standard errorMedian and rangeMedian and standard detion  <response>: - the area of either side of mean in normal distribution curve gives the confidence limit. - confidence limit is calculated from mean and standard detion. - 95 percent confidence limits is 2 standard detion added and subtracted from the mean. Reference : Parks textbook of preventive and social medicine, 23rd edition, pg no:849 