Table 8: Clustering with smoking represented by four categories of smoking behaviour

Data are mean values for characteristics in a cluster, shown only where they differ significantly from the mean of the whole population.

For the sake of comprehensibility, these are the means of unstandarised data, except in the case of IND2 and JOB2 for which the data were effectively standardised during coding.

The column headed R represents the residual group which had no affinity for any of the clusters formed.

a) Three clusters formed at distance threshold = 3.0

GROUP  all 1 2 3 R
n 3895 2071 719 1099 6
% women 53 65 44 38  
AGEY 50 48 44 57  
EDUC 2        
INCO 6.5   5.9    
ALCO 1.7 1.3 3.4 1.6  
KCAL 2065 1990 2245   2899
CHOL 288 270 315 304  
FIBE 16   13.4 17.5  
CARO 511 540 339 569  
CAFF 175 127 273 202  
ACTI 2   2.2 2  
MODE 1.7        
SOFA 2.5 2.4 2.7    
BMIX 28.4   26.9    
HOU2 5.8       3.8
IND2 0.1 0.07 0.13 0.12  
JOB2 0.12   0.19 0.09 0.5
PREP 2.2        
% current 17 1 86 2  
% occas. 4 1 14 2  
% former 27 0 1 94  
% never 53 98 0 2  
risk   0 14.5 4.8 10.4

b) Six clusters formed a distance threshold = 2.2

GROUP  all 1 1 1 1 2 3 R
    1 2 3 4 - -  
n 3895 343 201 581 939 716 1097 18
% women 53 82 87 46 65 44 38  
AGEY 50 35 40 38 61 44 57  
EDUC 2 2.3 1.7 2.6 1.7      
INCO 6.5   5.7 8.1 6.2 5.9    
ALCO 1.7 1.3 1   0.9 3.4 1.6  
KCAL 2065 2261 1487 2546 1653 2243    
CHOL 288   202 346 233 312 304  
FIBE 16 18 9.9 17.7   13.4 17.4  
CARO 511 645 325 546   338 569  
CAFF 175 93 82   124 274 202  
ACTI 2 2.2 2.1 2 1.9 2.2 2  
MODE 1.7   1.9 1.5        
SOFA 2.5   2.1 2.2   2.7    
BMIX 28.4   30.9     26.9    
HOU2 5.8 5.5 5.1 6.5 5.8      
IND2 0.1 0.03   0.14 0.04 0.13 0.12 0.39
JOB2 0.12 0.2 0.32 0.08 0.06 0.19 0.09 0.44
PREP 2.2 1.7 1.2 4.4 1.4      
% current 17 0 0 1 1 86 2  
% occas. 4 1 0 1 1 14 2  
% former 27 0 0 1 0 1 94  
% never 53 99 99 97 98 0 2  
risk   4.5 15.8 8.6 3.8 14.5 4.8 7.7

c) Twelve clusters formed at distance threshold = 1.84

GROUP  all 1 1 1 1 1 1 1 2 2 3 3 3 R
    1 2 3 3 4 4 4 - - - - -  
    - - 1 2 1 2 3 1 2 1 2 3  
n 3895 341 201 338 242 380 212 344 376 339 645 189 261 27
% women 53 82 87 28 70   75 74 36   40 20   26
AGEY 50 35 40 40 35 57 64 63 40   59 40 65  
EDUC 2 2.3 1.7 2.6 2.7 1.7 2.4 1.3 2.2 1.7 2.3 1.8 1.4  
INCO 6.5   5.7 8.2 7.9 7.4 7.6 4 6.4 5.2 7.6   4.9  
ALCO 1.7 1.3 1     1 1 0.8 3.6 3 1.3 3.2 1.1  
KCAL 2065 2249 1487 2929 2010 1721 1742 1518 2686 1751   2677 1606 2567
CHOL 288   202 422 240 213   228       374    
FIBE 16 18 9.9 20.7   16.6 16.8 14 16 10.4 17.9 21.1 13.6  
CARO 511 645 325 539 557   684     284 559 645 529  
CAFF 175 93 82 200 125 110 187 99 287 260 246   118  
ACTI 2 2.2 2.1   1.9     1.7 2.3   2.1   1.4  
MODE 1.7   1.9 1.5 1.5 1.5   2 1.6 1.9 1.5   2  
SOFA 2.5   2.1 2   1.9 3.1 2.9   2.9 2.4 2.1 3.3  
BMIX 28.4   30.9     27.6   29.9 26.9 26.9        
HOU2 5.8 5.4 5.1 6.7   6 6.6 5.1   5.3 6.4 4.9 5.1  
IND2 0.1 0.04   0.18     0.02 0.01 0.13     0.4 0.04 0.41
JOB2 0.12 0.2 0.32 0.06   0.07 0.05 0.04 0.18 0.2 0.07 0.24 0.03 0.41
PREP 2.2 1.7 1.2 3.5 5.6 1.6 1.8 1 2.8 1.6     1.1  
% current 17 0 0 1 1 0 1 2 75 98 0 3 4  
% occas. 4 1 0 1   1 0   24 1 0      
% former 27 0 0 0 2 0 0 0 0 1 99 81 90  
% never 53 99 99 98 96 99 99 96 1 0 0 11 1  
risk   4.5 15.8 9.7 5.4 1.5 3.6 13.1 10.4 16.8 1.7 15.7 14.7 0

d) Twenty four clusters formed at distance threshold = 1.4

GROUP  all 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 3 3 3 3 3 3 3 R
    1 1 2 3 3 3 4 4 4 4 4 4 4 - - - - - - - - - - -  
    - - - 1 1 2 1 1 1 2 3 3 3 1 1 2 2 1 1 1 2 2 3 3  
    1 2 - 1 2 - 1 2 3 - 1 2 3 1 2 1 2 1 2 3 1 2 1 2  
n 3895 236 103 200 136 199 241 61 131 186 211 92 101 147 178 197 210 126 238 179 225 110 77 171 87 53
% women 1.5 94   87   8 70 89   37 74 95 88     23   33 89 9 30 5   38  
AGEY 49.7 36 31 40 37 41 35 55 62   64   65 68 42 38 54 39 66   59 38 43 66 65  
EDUC 2 2.5   1.7 2.7 2.5 2.7 1.1 2.6 1.3 2.4 1.4 1.4 1.3 2.4   1.7 1.5 1.8 2.5 2.5 2.3 1.1 1.5 1.1  
INCO 6.5   4.9 5.7 8 8.4 7.9   8 7.4 7.6 4.1 4 4     5.5 4.8 6.6 8.1 8.5 7 4.5 5.4 3.7  
ALCO 1.7 0.9 2.2 1 1 2.6   0.4 0.7   1 0.5 0.6   3 4.2 2.9 3.3 0.8 1.3   3.2   1    
KCAL 2065 1974 2892 1483 2735 3070 2014 1485 1794 1749 1746 1500 1256 1713   3235 1835 1625 1899 1873 2532 2652 2697 1753 1329  
CHOL 288 221 435 202 482 382 240 193 204 225     167   251 413         392   402      
FIBE 16 17 20.4 9.8 18.5 22.3     18.9   16.8 11.6 10.4     17.7 11.4 8.7 17.8   20.4 19.1     8.4  
CARO 511 763 385 326 542   558     445 687   351 562   429   101 487     698     63  
CAFF 175 93 90 83 202   125 90 115 112 188 102 79 109 232 335 331 149 151 269 327   129 113    
ACTI 2 2.2   2.1 1.6 2.4 1.9 2.2       1.5 1.6   2.2 2.4 1.9   2.1       2.5 1.2 1.7  
MODE 1.7 1.5   1.9   1.5 1.5 1.1 1 2   2 2.1 1.8 1.4   1.9 1.9   1.3 1.3     2 2.1  
SOFA 2.5 2.2 2.9 2.1 1.9 2.1     1.8 2.1 3.2   3.9 2.2     3.1       2.3   1.8 3.5 3  
BMIX 28.4 26.1 33.6 30.9 27.3       26.9 27.9   36.1 27.4 27.7   26.2 27.1             30.2 27.6  
HOU2 5.8 5.8 4.7 5.1 6.6 6.8     6.6 5.7 6.6   4.8 4.8       5.1 6.1   6.8 5.5 3.9 5    
IND2 0.1 0.03       0.26   0.02     0.02 0.03 0 0.01   0.2 0.03 0.27 0.03 0.04 0.15 0.28 0.56 0.04   0.25
JOB2 0.12   0.28 0.32 0.01         0.05 0.05 0.04 0.04 0.05 0.17 0.18   0.33 0.06   0.06 0.23 0.26 0.03 0.03 0.26
PREP 2.2 1.5   1.2   4.4 5.6 1.3   1.1 1.8 0.9 0.8 1.3   3.4 1.5         3.2 1.3 1.2 0.9  
% current 17 0 0 1 1 1 1 0 0 0 1 5 0 1 49 98 98 97 0 0 1 0 5 1    
% occas. 4 1 0 1   1   0 0 1 0       51 0 1   1 0 0   10   9  
% former 27 0 1 1 1 0 2 0 0 0 0 0 0 1 0 1 1 1 99 100 98 99 57 96 79  
% never 53 99 99 99 97 99 96 100 100 99 99 95 98 96 0 1 0 0 0 0 0 0 27 1 0  
risk   1.3 16.9 15.8 8.8 11.6 5.4 2.5 0 5.1 3.6 13.6 17 7.7 4.6 15.6 13.1 21.3 2.6 2.1 7.7 12.7 19.9 13.2 16.9 4.7

e.1) First part of the 36 clusters formed at distance threshold = 1.16

GROUP  all 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
    1 1 1 2 2 3 3 3 3 3 3 4 4 4 4 4 4 4 4
    - - - - - 1 1 1 1 2 2 1 1 1 2 2 3 3 3
    1 1 2 - - 1 1 2 2 - - 1 2 3 - - 1 2 3
    1 2 - 1 2 1 2 1 2 1 2 - - - 1 2 - - -
n 3895 93 142 103 110 89 69 65 131 66 154 84 61 131 185 113 97 92 101 146
% women 53 88 97   87 87   5 14 86   89   36 85   95 88  
AGEY 50 39 34 31 38 42 37 38 40 43 37 31 55 62   67 61   65 68
EDUC 2 2.5 2.4   1.2 2.4 2.8 2.6 2.6   2.8 2.5 1.1 2.6 1.3 2.4 2.4 1.4 1.4 1.3
INCO 6.5 5.6 7.6 4.9 4.3 7.5 8.6   8.8 7.7 8.5     8 7.3   7.6 4.1 4 4
ALCO 1.7 1 0.9 2.2     1.2 0.8   3.7   2.3 0.4 0.7   1.1 0.8 0.5 0.6  
KCAL 2065 1785   2892 1550 1396 2545 2957 2940 3362   1882 1485 1794 1750 1707 1793 1500 1256 1705
CHOL 288 204 232 435 234 164   689 303 544   213 193 204 224       167  
FIBE 16   18.1 20.4 12.6 6.3 19.6   22.9 21.4   11   18.9   16.1 17.6 11.6 10.4  
CARO 511 741 782 385 464 156 637 426   443 597 503     447 624 760   351 564
CAFF 175 78 104 90 58   283 105   256 132 110 90 115 113 238   102 79 109
ACTI 2   2.3   2   1.2   2.4 2.4 1.6 2.4 2.2     2   1.5 1.6  
MODE 1.7   1.5   1.9   1.4   1.5   1.4   1.1 1 2     2 2.1 1.8
SOFA 2.5 3.1 1.7 2.9 1.9 2.4 1.7   2   2.3     1.8 2.1 2 4.5   3.9 2.2
BMIX 28.4 27.4 25.4 33.6   32.2 27.6 27   30 29 27.1   26.9 27.8 27.3 29.9 36.1 27.4 27.7
HOU2 5.8 4.3 6.7 4.7 4.1 6.4   6.8 7   6.5 5.1   6.6 5.7 6.6 6.6   4.8 4.8
IND2 0.1 0.01         0.01   0.3 0.18     0.02     0.01   0.03 0 0.01
JOB2 0.12 0.01 0.27 0.28 0.4 0.21 0 0.03 0.04           0.05 0.05 0.05 0.04 0.04 0.05
PREP 2.2 1.4 1.6   1.3 1.2     3.8 5.6 5.5 5.9 1.3   1.1 1.8 1.8 0.9 0.8 1.3
% current 17 0 0 0 0 1 0 2 0 0 1 0 0 0 0 2 0 5 0 1
% occas. 4   0           0   0     0   0        
% former 27 0 0 1 0 1 0 2 0 0 0 5 0 0 0 0 0 0 0 1
% never 53 98 100 99 99 98 99 95 100 98 99 92 100 100 99 98 100 95 98 96
risk   6 2.2 16.9 16.2 11.7 7.7 7.7 8 19.2 7.8 11.2 2.5 0 5.1 2.2 5.6 13.6 17 7.7

e.2) Second part of the 36 clusters formed at distance threshold = 1.16

GROUP  all 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 R
    - - - - - - - - - - - - - - - - -  
    1 1 1 1 2 2 2 1 1 1 1 1 2 2 3 3 3  
    1 1 2 2 1 1 2 1 1 2 3 3 1 2 1 1 2  
    1 2 1 2 1 2 - 1 2 - 1 1 - - 1 2 -  
n 3895 85 91 132 62 137 71 126 120 113 178 112 110 108 76 112 57 87 86
% women 53     17   69 28   29 36 89 18 1 31 5 30 91 38  
AGEY 50 43 41 40 32   58 39 66 67   62 57 38 43 70 58 65  
EDUC 2 2.5 2.2   2.3 1.6   1.5   1.7 2.5 2.6 2.5 2.3 1.1 1.4   1.1  
INCO 6.5         4.9   4.8 7.5 5.6 8.1 8.6 8.4 7 4.5 4.3 7.5 3.7  
ALCO 1.7   3.6 3.7 5.3 3.5   3.3 0.9 0.8 1.3     3.2     0.8    
KCAL 2065 1808   3465 2756 1950 1614 1625   1784 1877   2949 2638 2690 1801 1626 1329  
CHOL 288 210   465   323           361 429   398        
FIBE 16     18.7 15.8   7.6 8.7   18.1     22.8 19.2       8.4  
CARO 511 294     511 474 203 101 548 412     610 710   796   63  
CAFF 175 274   391   304 377 149   121 271 151 510   131 113 109    
ACTI 2   2.3 2.5   1.7     2.2 2.1     2.3   2.5 1.3 1.1 1.7  
MODE 1.7 1.2   1.8   1.9   1.9 1.9 1.5 1.3 1.2       1.9 2.1 2.1  
SOFA 2.5         3.4       2.2   2.4 2.2   1.8 3.5 3.6 3  
BMIX 28.4     26.6 25.3   26                 29.4 31.9 27.6  
HOU2 5.8         4.9 6.2 5.1 6.2 6.1   6.7 6.9 5.4 3.9 4.5      
IND2 0.1     0.25   0.01   0.27   0.02 0.04   0.16 0.29 0.55 0.03     0.17
JOB2 0.12   0.2   0.24     0.33   0.04     0.04 0.22 0.26 0.02   0.03 0.22
PREP 2.2       5.2 1.5               3.2 1.3 1   0.9  
% current 17 100 0 98 98 99 97 97 0 0 0 2 0 0 5 0 2    
% occas. 4   100 0   0       0 0 0     11     9  
% former 27 0 0 1 0 1 0 1 98 100 100 98 98 99 58 96 95 79  
% never 53 0 0 1 2 0 0 0 1 0 0 0 1 0 26 2 0 0  
risk   3.5 4.1 14.9 11.2 15.5 8.9 21.3 1.3 3.8 2.1 1.7 11.1 12.7 19.8 13.9 9.5 16.9 3.6