Table 1

Baseline characteristics of the total sample and by smoking status (unweighted data)*

Total sample
(n=2062; 100%)
Current smoker
(n=586; 28.4%)
Ex-smoker
(n=369; 17.9%)
Never-smoker
(n=1107; 53.7%)
Age, years (mean±SD)51.8±19.847.1±17.258.4±17.552.1±21.1
Sex
 Female1070 (51.9%)271 (46.2%)143 (38.8%)656 (59.3%)
 Male992 (48.1%)315 (53.8%)226 (61.2%)451 (40.7%)
Education†
 High school equiv.479 (23.2%)110 (19.2%)85 (23.2%)284 (27.4%)
 Adv. tech. college equiv.133 (6.5%)28 (4.9%)30 (8.2%)75 (7.2%)
 Secondary school equiv.686 (33.3%)230 (40.1%)116 (31.7%)340 (32.8%)
 Junior high school equiv.646 (31.3%)193 (33.6%)130 (35.5%)323 (31.1%)
 No qualification33 (1.6%)13 (2.3%)5 (1.4%)15 (1.4.5%)
Household income
 >€5000/per month134 (6.5%)26 (4.4%)27 (7.3%)81 (7.3%)
 €4000–5000/per month128 (6.2%)31 (5.3%)24 (6.5%)73 (6.6%)
 €3000–4000/per month369 (17.9%)96 (16.4%)67 (18.2%)206 (18.6%)
 €2000–3000/per month557 (27.0%)164 (28.0%)106 (28.7%)287 (25.9%)
 €1000–2000/per month638 (30.9%)173 (29.5%)117 (31.7%)348 (31.4%)
 < €1,000/per month236 (11.4%)96 (16.4%)28 (7.6%)112 (10.1%)
  • *Baseline characteristics of the sample have also been published elsewhere18 under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited: CC BY 4.0. Data are presented as number (% within row), unless otherwise stated.

  • †German equivalents to education levels listed in table from highest to lowest: high school equivalent = “Allgemeine Hochschulreife,” advanced technical college equivalent = “Fachhochschulreife,” secondary school equivalent = “Realschulabschluss,” junior high school equivalent = “Hauptschulabschluss”.