451 



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cluscer cooiMrisoQ program. In addition the clusters from each half of . 

 the sample ««• cross related to a range of external variables such as 

 cigarette consumption, depth of inhalation, nicotine delivery of brand 

 most often smcHted, ««•, social class, etc. The results of the cluster 

 comparison prograS' Indicated ttet the two halves of the sample matched • 

 well at both the low level (the 4 cluster solution) and the high level 

 (the 12 cluster solution). Between these two extremes the matching 

 became progressively less satisfactory at the 5, 6 and 7 cluster level 

 and progressively more satisfactory at the 9, 10 and 11 cluster level. 

 After taking into consideration the matching data, the profiles of clusters 

 from the various solutions and the cross relation with external variables 

 it was agreed that respondents should be assigned to clusters on the 

 basis of a 12-clustcr solutioQ. y^ 



4. Concern for ggalth v-_ 



^X ' 



In order to obti^ some measure of the concern felt Jjy respondents 

 / ■ 



for the harm which they aii^ht be causing to their own health by sswking, 



a battery of question^ ms i«l&U>ded for this particular purpose and is 

 reproduced in Appendix V (page 66). The cigarette brands mentioned in 

 Question 13 are those shown ia the Government Chemist's second list (2) 

 as delivering 11 mg tar or less. The figure of 11 mg was chosea to 

 include Silk Cut. as it was felt that this braod has a connotation of ^ 

 "safety" by reason of the advertising attached to >t. Some of the 

 questions in Appendix V are taken from McKcnnell's first study (4), 

 others were designed specially for this investigation. The ^manner in ^ 

 which the "health score" was derived from the answers to Questions 18 

 to 21 is indicated at the end of Appendix V. The questions In this 



5'. c 



I 



O 





