The relative validity of a chronological drinking record

Area of Science:

• Alcohol consumption research
• Survey methodology
• Behavioral science

Background:

• Accurate measurement of alcohol consumption is crucial for public health research.
• Self-reported data collection methods, such as daily diaries and interviews, are commonly used.
• The recency of data collection is often hypothesized to improve reporting accuracy.

Purpose of the Study:

• To compare the validity of a daily drinking record versus a chronological drinking record.
• To assess the impact of data collection method on reported alcohol consumption.
• To identify potential biases in self-reported alcohol intake based on recording method.

Main Methods:

• Comparison of two data collection methods: a daily record (respondent-completed) and a chronological record (interviewer-assisted).
• Both methods aimed to capture drinking episodes over a specific period (last day vs. last week).
• Analysis focused on total alcohol consumption and number of drinking episodes reported by each method.

Main Results:

• The chronological method yielded significantly higher total alcohol consumption compared to the daily record.
• Men, especially frequent drinkers, underreported drinking episodes in the daily record.
• Women did not show a significant difference in reporting between the two methods.

Conclusions:

• Contrary to expectations, the daily drinking record did not provide more valid results for total alcohol consumption.
• The burden of daily recording may lead to underreporting among frequent drinkers, particularly men.
• Methodological choices in alcohol consumption surveys can significantly influence findings, especially for specific demographic groups.