Objective:

To correct the definition and analysis of drug and tobacco use in the study.

Approach:

Key Findings:

• The original definition of drug use was clarified.
• Tobacco use was explicitly defined and separated from narcotic substance use.

Interpretation:

The updates provide clearer definitions for drug and tobacco use in the context of the study.

Limitations:

• Inconsistencies in documentation led to the exclusion of tobacco use from the final analysis.

Conclusion:

The article has been updated to reflect accurate definitions regarding drug and tobacco use.

Sources:

• BMC Cancer
Attribution Notice

This content is an AI-generated, fully rewritten summary based on a published scholarly article. It does not reproduce the original text and is not a substitute for the original publication. Readers are encouraged to consult the source for full context, data, and methodology.