Table 2

Characteristics in 1986 of the asthmatic subjects who in 1996 were in remission and who not were in remission, respectively, the asthmatics who did not participate in 1996, and those who had died since 1986. Differences (p value) between remission vs non-remission, non-participants vs participants, and deceased vs all others

CharacteristicsRemission
(n = 16)
Non-remission (n = 251)Non-participants (n = 13)Deceased after 1986 (n = 20)Difference (p value)
Remission vs non-remissionParticipants vs non-participantsDeceased vs
all others
Smoking habits
 Non-smokers7  (43.8)100  (39.8)3  (23.1)6  (31.6)
 Ex-smokers2 (12.5)86 (34.3)2 (15.4)8 (42.1)0.1350.0260.656
 Smokers7 (43.8)65 (25.9)8 (61.5)5 (26.3)
Lung function
 FEV1 % pred median (range)85 (57–113)85 (35–134)86 (69–123)69 (12–116)0.8730.210<0.001
 FEV1 % <80% predicted5 (31.3)90 (35.9)4 (33.3)15 (75.0)1.0001.0000.001
Symptoms and medicines
 Chronic productive cough4 (25.0)104 (41.4)8 (61.5)15 (75.0)0.0820.1930.018
 Persistent wheeze2 (12.5)72 (28.7)3 (23.1)10 (50.0)0.2501.0000.045
 Asthma medicines daily1 (6.3)74 (29.5)2 (15.4)9 (45.0)0.0470.5250.123
Age at onset of asthma2-150
 0–19 years6 (37.5)58 (23.1)
 20–39 years5 (31.2)84 (33.5)}2-150 }2-150 0.473}2-150 }2-150
 ⩾40 years3 (18.8)69 (27.5)
 Don’t know2 (12.5)40 (15.9)
  • 2-150 Data about age at onset of disease were not avaible for non-participants or deceased.