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Published byClaribel Bruce Modified over 9 years ago
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GAP Toolkit 5 Training in basic drug abuse data management and analysis Training session 6 Coding open questions
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Objectives To distinguish between the coding of open and closed questions To establish a set of practical coding rules for open questions To describe standard coding schemes, including those used in the Annual Reports Questionnaire
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Open questions The set of all possible answers is unknown Post-coding at some level is required
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Example “Please use the space below to document any other developments in prevalence and patterns of drug abuse in your country over the past year.” (Annual Reports Questionnaire: Summary expert opinions, p. 14.)
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Examples 1.Primary drug of use (specify): ……………………………….. 2.Other (specify): ………………………………..
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Coding approaches Anticipate as many of the responses as possible and pre-code the question as a list with an Other category Where no pre-coding has occurred, establish a list of categories by: –Sampling a percentage of the completed questionnaires, or –Using an alphanumeric variable in SPSS and the frequency command
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Level of detail Maintain the highest level of detail possible Recode when the analysis requires it
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Standard coding schemes Benefits: –Comparability –Ease Annual Reports Questionnaire coding schemes
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Definition of data elements Drug categories Age categories Time periods Modes of ingestion
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Annual Reports Questionnaire drug categories
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Drug classes and types Drug classes provide categories for a range of drug types Types are a subset of classes
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Drug classes Cannabis-type Opioids Cocaine-type Amphetamine-type Sedatives and tranquillizers Hallucinogens Solvents and inhalants Other drugs
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Drug types Marijuana Hashish Heroin Opium Other opioids Cocaine powder Crack cocaine Other cocaine Amphetamine Methamphetamine Ecstasy-type Barbiturates Benzodiazepines LSD Other hallucinogens Solvents and inhalers Other drugs
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Annual Reports Questionnaire age categories
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Age categories XAge in years ChildrenX <= 12 Young teens13 <= X <= 14 Late teens15 <= X <= 16 Young adults17 <= X <= 24 Adults25 <= X <= 34 Older adults35 <= X
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Time periods Lifetime Annual Current Daily
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Mode of ingestion Oral consumption –Eating –Drinking –Swallowing Sniffing and snorting Smoking or inhaling sublimate Injection
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Summary Open questions –Anticipate and pre-code with an Other category –Let the data decide, post-code Standard coding categories –Drug types and classes –Age groups –Time periods –Mode of ingestion
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