How to Analyze Survival Data
How to Analyze Survival Data: Introduction Print Section Listen All the methods that we have discussed so far require “complete” observations, in the sense that we know the outcome of…
What Does “Not Significant” Really Mean?
What Does “Not Significant” Really Mean?: Introduction Print Section Listen Thus far, we have used statistical methods to reach conclusions by seeing how compatible the observations were with the null…
How to Test for Differences between Groups
How to Test for Differences between Groups: Introduction Print Section Listen Statistical methods are used to summarize data and test hypotheses with those data. Chapter 2 discussed how to use…
How to Summarize Data
How to Summarize Data: Introduction Print Section Listen An investigator collecting data generally has two goals: to obtain descriptive information about the population from which the sample was drawn and…
Alternatives to Analysis of Variance and the t Test Based on Ranks
Alternatives to Analysis of Variance and the t Test Based on Ranks: Introduction Print Section Listen Analysis of variance, including the t tests, is widely used to test the hypothesis…
What Do the Data Really Show?
What Do the Data Really Show?: Introduction Print Section Listen The statistical methods we have been discussing permit you to estimate the certainty of statements and precision of measurements that…
Biostatistics and Clinical Practice
Biostatistics and Clinical Practice: Introduction Print Section Listen Until the second quarter of the 20th century, medical treatment had little positive effect on when, or even whether, sick people recovered….
DIFFICULT AIRWAY MANAGEMENT
YOUR PATIENT Print Section Listen You are called to another operating room by your colleague for a failed intubation on a 2-year-old patient. PREOPERATIVE CONSIDERATIONS Print Section Listen Most nonsyndromic…
LARYNGEAL PAPILLOMATOSIS
YOUR PATIENT Print Section Listen A 7-year-old female patient presents with hoarseness and stridor. The patient has a history of laryngeal papilloma. PREOPERATIVE CONSIDERATIONS Print Section Listen Laryngeal papillomas are…
ASPIRATED FOREIGN BODY
YOUR PATIENT Print Section Listen A 2-year-old child is brought to the ER. The mother states that an older sibling was eating peanuts and the child grabbed some and put…
