Table 1

Baseline characteristics of the study subjects and those with incomplete follow-up data on life satisfaction*.

Study subjects
 Subjects with incomplete follow-up
 p-value
Baseline characteristics
 N (9679)
 column %
 N (6817)
 column %
Sex



<0.0011)
     Men
 4466
 46.1
 3932
 57.7
     Women
 5213
 53.9
 2885
 42.3






Age-group



<0.0012)
     18 – 25
 4121
 42.6
 3100
 45.5
     16 – 35
 3513
 36.3
 2431
 35.6
     36 – 45
 2045
 21.1
 1286
 18.9






Social class



<0.0013)
     Upper
 565
 5.8
 361
 5.3
     Intermediate
 2695
 27.8
 2121
 31.1
     Lower
 6419
 66.4
 4335
 63.6






Marital status



<0.0014)
     Cohabiting
 5386
 55.7
 3443
 50.6
     Living alone
 4291
 44.3
 3366
 49.4






Smoking cigarettes daily



<0.0015)
     Non-smoker
 6698
 69.3
 3991
 58.7
     1 – 19
 2344
 24.2
 2976
 30.5
     > 19
 627
 6.5
 737
 10.8






Pure alcohol g/month



<0.0016)
     None
 1361
 14.1
 807
 11.9
     1 – 99
 4077
 42.2
 2334
 34.3
     100 – 399
 2626
 27.1
 2076
 30.5
     400 – 799
 1083
 11.2
 939
 13.8
     ≥ 800
 524
 5.4
 648
 9.3






Physical activity/month



<0.017)
     < 1
 1138
 12.2
 888
 13.7
     1 – 5
 4585
 49.3
 3045
 46.9
     ≥ 6
 3577
 38.5
 2563
 39.4






Life satisfaction in 1975



<0.0018)
     4 – 6
 2214
 22.9
 1370
 20.1
     7 – 11
 6239
 64.4
 4303
 63.1
     12 – 20
 1226
 12.7
 1144
 16.8

* Life satisfaction data not available from 1981 and/or 1990.

1) F(1, 10007) = 165; 2) F(2, 10006) = 7.02; 3) F(2, 10006) = 9.17; 4) F(1, 10002) = 36.1; 5) F(2, 9995) = 94.0; 6) F(4, 9995) = 45.0; 7) F(2, 9786) = 5.50; 8) F(2, 10006) = 29.0

Koivumaa-Honkanen et al. BMC Psychiatry 2005 5:4   doi:10.1186/1471-244X-5-4