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--- smoking_derivatives [2020/06/09 07:38] – trynke
+++ smoking_derivatives [2025/02/05 13:49] (current) – external edit 127.0.0.1
@@ Line 2: / Line 2: @@
 Adult [[start|Lifelines]] participants were asked whether they (had) smoked any [[smoking & tobacco use|tobacco]].\\
-Using the raw data from [[1A questionnaire 1]], researchers from the [[https://www.rug.nl/research/epidemiology/vonk|UMCG Department of Epidemiology]] calculated various derivative variables ([[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]]:
@@ Line 85: / Line 86: @@
 **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 =====