smoking_derivatives
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| Adult [[start|Lifelines]] participants were asked whether they (had) smoked any [[smoking & tobacco use|tobacco]].\\ | Adult [[start|Lifelines]] participants were asked whether they (had) smoked any [[smoking & tobacco use|tobacco]].\\ | ||
| Using the raw self-reported data from [[1A questionnaire 1]], researchers from the [[https://www.rug.nl/research/epidemiology/vonk|UMCG Department of Epidemiology]] calculated various derivative variables for smoking behavior ([[sections]]: [[lifestyle & environment]] and [[secondary & linked variables]]).\\ | Using the raw self-reported data from [[1A questionnaire 1]], researchers from the [[https://www.rug.nl/research/epidemiology/vonk|UMCG Department of Epidemiology]] calculated various derivative variables for smoking behavior ([[sections]]: [[lifestyle & environment]] and [[secondary & linked variables]]).\\ | ||
| - | These derivative variables can be requested from Lifelines (data@lifelines.nl).\\ | + | These derivative variables can be requested from Lifelines (data@lifelines.nl) or requested in the Lifelines catalogue.\\ |
| + | **Please note:** An updated version of the smoking derivatives is available which includes derivatives for more time points and an updated version for the baseline derivaties (see [[smoking_derivatives_v2|updated smoking derivatives]]). \\ | ||
| The following derivative variables were calculated for ~152,300 adult participants at [[1A|baseline]]: | The following derivative variables were calculated for ~152,300 adult participants at [[1A|baseline]]: | ||
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| **Derivative variables** | **Derivative variables** | ||
| - | ^Variable name^Variable label^Additional information^ | + | | **Code** ^ Variable name ^ Variable label ^ Additional information ^ |
| - | |py|packyears|cumulative smoking history: 1 packyear = 20 cigarettes per day for 1 year (or 10 cigarettes for 2 years, or 1 cigarette for 20 years). Cigars are regarded as 3 cigarettes.| | + | | packyears_calculable_adu_c_1 | pyok | pack years can be calculated | - | |
| - | |pywocig|packyears without cigars|Since cigars may add very much to the number of packyears, the total number of packyears without cigars is also calculated.| | + | | packyears_cumulative_adu_c_1 | py | packyears | cumulative smoking history: 1 packyear = 20 cigarettes per day for 1 year (or 10 cigarettes for 2 years, or 1 cigarette for 20 years). Cigars are regarded as 3 cigarettes. | |
| - | |smokduration|duration of smoking in years|Total number of years smoking.| | + | | packyears_nocigars_adu_c_1 | pywocig | packyears without cigars | Since cigars may add very much to the number of packyears, the total number of packyears without cigars is also calculated. | |
| - | |smoking|smoking|Categorical variable with three categories: 0=never smoker, 1=ex smoker, 2=current smoker| | + | | smoking_calculable_adu_c_1 | smokdurok | smoking duration can be calculated | - | |
| - | |smkstart|age at start of smoking|-| | + | | smoking_duration_adu_c_1 | smokduration | duration of smoking in years | Total number of years smoking. | |
| - | |smkstop|age at end of smoking|-| | + | | smoking_habit_adu_c_1 | smoking | smoking | Categorical variable with three categories: 0=never smoker, 1=ex smoker, 2=current smoker | |
| - | |currsmoker|current smoker|0=no, 1=yes| | + | | smoking_startage_adu_c_1 | smkstart | age at start of smoking | - | |
| - | |eversmoker|ever smoker|0=no, 1=yes. Both current and ex smokers are regarded as ever smokers.| | + | | smoking_endage_adu_c_1 | smkstop | age at end of smoking | - | |
| - | |exsmoker|ex smoker|0=no, 1=yes| | + | | current_smoker_adu_c_1 | currsmoker | current smoker | 0=no, 1=yes | |
| - | |currentcigarettes|current number of cigarettes per day|-| | + | | ever_smoker_adu_c_1 | eversmoker | ever smoker | 0=no, 1=yes. Both current and ex smokers are regarded as ever smokers. | |
| - | |currentcigarillos|current number of cigarillos per day|-| | + | | ex_smoker_adu_c_1 | exsmoker | ex smoker | 0=no, 1=yes | |
| - | |currentcigars|current number of cigars|-| | + | | cigarettes_frequency_adu_c_1 | currentcigarettes | current number of cigarettes per day | - | |
| - | |currentpipe|current grams of pipe tobacco per day|-| | + | | cigarillos_frequency_adu_c_1 | currentcigarillos | current number of cigarillos per day | - | |
| - | |netgestopt|-|Variable indicating if the participant has recently quit smoking. This is the case if SMK3 is 'YES', SMK4A-D are '0' or missing, SMK5='YES' and SMK6 is equal to the current age. (1=yes)| | + | | cigars_frequency_adu_c_1 | currentcigars | current number of cigars | - | |
| + | | pipetobacco_frequency_adu_c_1 | currentpipe | current grams of pipe tobacco per day | - | | ||
| + | | recent_quitter_adu_c_1 | recent_quit | recent quitter | Variable indicating if the participant has recently quit smoking. This is the case if SMK3 is 'YES', SMK4A-D are '0' or missing, SMK5='YES' and SMK6 is equal to the current age. (1=yes) | | ||
| + | | recent_starter_adu_c_1 | recent_start | recent starter | - | | ||
| ===== Papers using Lifelines smoking derivative data ===== | ===== Papers using Lifelines smoking derivative data ===== | ||
smoking_derivatives.1591688329.txt.gz · Last modified: 2025/02/05 14:49 (external edit)
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