Analysis 2: censored data (dataset v2)

1) Conduct descriptive analyses of all new variables in the dataset this week. How are the data distributed? What measures of central tendency are appropriate for each?

2) Do you see evidence of censoring in the noise exposure variable (workleqdba)?

3) Do you see any relationship between subject ID (subjectid) and the noise exposure variable (workleqdba), or between the exposure duration (measuredshiftlengthhours) and noise exposure variable (workleqdba)?

4) From the assigned reading by Loomis and Kromhout, briefly describe in your own words one advantage and one disadvantage of using an individual-based exposure assignment strategy.

5) From the assigned reading by Passchier-Vermeer, briefly describe in your own words the mechanism by which noise exposure can lead to non-auditory health effects. 

6) From the assigned reading by Hornung and Reed, briefly describe in your own words one advantage and one disadvantage for each of the two proposed methods for assigning values to non-detectable exposure values.