Fig. 1From: Using of non-pharmacological pain methods, and the perceived barriers, among nurses in critical care unit in PalestineCalculation of sample size using online sample size calculator. Confidence interval 95%, margin of error 5% and population of 500 ICU nurses. The required sample size was 218. Accessed from https://www.calculator.net/sample-size-calculator.html?type=1&cl=95&ci=5&pp=50&ps=500&x=CalculateBack to article page