Table 1—

Characteristics of the Hordaland follow-up study cohort

MalesFemales
Total1352 (48.0)1467 (52.0)
Age in 1985 yrs
 15–29489 (36.2)491 (33.5)
 30–49541 (40.0)573 (39.1)
 50–70322 (23.8)403 (27.5)
Changes in smoking habits##
 Never-to-never427 (32.9)631 (45.6)
 Non-to-current67 (5.2)68 (4.9)
 Current-to-current395 (30.4)381 (27.5)
 Current-to-ex157 (12.1)136 (9.8)
 Ex-to-ex253 (19.5)167 (12.1)
Pack-yrs¶¶
 0427 (32.9)631 (45.3)
 1–9312 (24.1)392 (28.1)
 10–19270 (20.8)226 (16.2)
 20+287 (22.1)144 (10.3)
  • Data are presented as n (%)

  • #: some subjects were not included in these categories due to lack of reporting of smoking, or inconsistencies

  • : not all subjects responded to questions about the number of cigarettes they smoked per day or the number of years they had smoked