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. 2014 Jul 25;13:50. doi: 10.1186/1475-9276-13-50

Table 1.

Summary statistics with individual income

Variables Males
Females
2007
2009
2007
2009
Mean SD N Mean SD N Mean SD N Mean SD N
Individual income
5.497
2.977
1689
4.445
2.430
1689
3.600
2.310
1907
3.133
1.818
1907
Health
3.115
0.759
1689
3.123
0.771
1689
3.053
0.790
1907
3.032
0.769
1907
Age
43.137
15.842
1689
45.194
15.780
1673
43.568
15.814
1907
45.483
15.773
1890
Single
0.167
0.373
1681
0.144
0.351
1673
0.142
0.349
1899
0.115
0.319
1892
In a relationship
0.075
0.263
1681
0.071
0.257
1673
0.061
0.240
1899
0.067
0.250
1892
Cohabiting
0.201
0.401
1681
0.182
0.386
1673
0.213
0.410
1899
0.196
0.397
1892
Married
0.517
0.500
1681
0.550
0.498
1673
0.488
0.500
1899
0.506
0.500
1892
Divorced
0.032
0.175
1681
0.042
0.200
1673
0.059
0.235
1899
0.068
0.253
1892
Widowed
0.011
0.104
1681
0.012
0.109
1673
0.040
0.195
1899
0.048
0.213
1892
Low education
0.215
0.411
1689
0.215
0.411
1689
0.306
0.461
1907
0.306
0.461
1907
Medium education
0.426
0.495
1689
0.426
0.495
1689
0.279
0.449
1907
0.279
0.449
1907
High education
0.359
0.480
1689
0.359
0.480
1689
0.415
0.493
1907
0.415
0.493
1907
Employee
0.820
0.384
1499
0.808
0.394
1311
0.808
0.394
1653
0.797
0.402
1521
Business owner
0.195
0.396
1404
0.230
0.421
1167
0.080
0.271
1512
0.086
0.280
1247
Student
0.208
0.406
1356
0.221
0.415
1048
0.269
0.444
1514
0.256
0.437
1222
Homemaker
0.043
0.202
1355
0.037
0.189
1037
0.162
0.368
1528
0.159
0.365
1249
Parent leave
0.016
0.124
1350
0.019
0.137
1028
0.051
0.219
1473
0.058
0.234
1204
Temporary ill
0.033
0.178
1354
0.031
0.174
1039
0.053
0.224
1478
0.053
0.225
1211
Retired
0.083
0.276
1463
0.128
0.335
1254
0.095
0.293
1607
0.147
0.354
1457
Unemployed
0.026
0.158
1333
0.084
0.278
1040
0.029
0.169
1458
0.068
0.252
1196
Disabled
0.038
0.192
1364
0.050
0.218
1067
0.076
0.265
1510
0.094
0.292
1251
Underweight
0.004
0.060
1689
0.002
0.050
1689
0.007
0.085
1907
0.008
0.092
1907
Optimal
0.332
0.471
1689
0.300
0.458
1689
0.432
0.495
1907
0.412
0.492
1907
Overweight
0.467
0.499
1689
0.499
0.500
1689
0.313
0.464
1907
0.331
0.471
1907
Obese
0.199
0.399
1689
0.200
0.400
1689
0.249
0.432
1907
0.250
0.433
1907
Non-smoker
0.468
0.499
1610
0.468
0.499
1606
0.483
0.500
1823
0.488
0.500
1828
Daily smoker
0.156
0.363
1610
0.114
0.317
1606
0.152
0.359
1823
0.140
0.347
1828
Weekly smoker
0.013
0.114
1610
0.027
0.162
1606
0.023
0.151
1823
0.023
0.150
1828
Seldom smoker
0.029
0.168
1610
0.029
0.169
1606
0.037
0.188
1823
0.020
0.142
1828
Former smoker
0.332
0.471
1610
0.362
0.481
1606
0.304
0.460
1823
0.328
0.470
1828
5+ alcoholic drinks 18.622 34.115 1649 17.255 35.223 1634 6.869 17.817 1856 6.265 20.131 1828

Income is measured in millions of ISK. Health is measured with a four-level self-assessed health variable ranging from 1 to 4. The variable “5+ alcohol drinks” measures how often in the last twelve months the subject consumed five or more alcoholic drinks.