• Research questions
• Question is: Does LDCT screening for lung cancer result in earlier diagnosis of lung cancer?
• The question could compare data statistics in the population who have been diagnosed with lung cancer who received screening and those who have not
• The null hypothesis is that populations with a higher screening rate do not have a lower incidence of deaths due to lung cancer.
• The alternative hypothesis is that populations with a higher screening rate do have a lower incidence of deaths due to lung cancer.

• Key variables
• Dependent variables
• Cancer stage at diagnosis
• Independent
• Status of LDCT prior to lung cancer diagnosis
• Controlled
• Age - 65-77
• Sex
• Race
• Diagnosis between 1-1-11 to 11-26-11 or 2/5/15 to 12/31/15
• Comorbidities

Selection criteria

• Age 65 - 77

In qualitative analysis, no calculations please.

oI need Analytic statistics - multivariate analysis

I need to specify the analytic model

i need describe how to determine a significant association

I need Result interpretation