• 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

Comorbidities

Diagnosis on different dates

Selection criteria

• Age 65 - 77

oDescriptive statistics

I need the Univariate analysis for all involved variables. Specify the type of variable and which descriptive statistics I will provide.