['2-26', 'relative', 'risk', 'estimate', 'for', 'cancer', 'of', 'all', 'sites', 'combined', 'was', '1.2', 'for', 'both', 'maternal', 'smoking', 'and', 'paternal', 'smoking.', 'For', 'individual', 'sites', 'relative', 'risk', 'estimates', 'were', 'close', 'to', 'one', 'with', 'the', 'exception', 'of', 'haematopoietic', 'tissue', 'where', 'the', 'relative', 'risk', 'estimate', 'was', '2.3', 'for', 'maternal', 'and', '2.4', 'for', 'paternal', 'smoking.', 'A', 'significant', 'relationship', 'of', 'cancer', 'risk', 'to', 'exposure', 'during', 'adulthood', 'was', 'noted', 'for', 'all', 'sites', 'combined', 'and', 'for', 'certain', 'specific', 'sites,', 'as', 'shown', 'in', 'the', 'table', 'below.', 'Number', 'of', 'Relative', 'risk', 'Site', 'osure', 'inde', 'cases', '9', 'co', 'imits', 'All', 'sites', 'Number', 'of', 'household', 'members', 'who', 'smoke', '-', '0', '32', '1.0', '-1', '67', '1.5(0.9-2.5)', '-', '2', '45', '2.3(1.3-4.3)', '-', '3+', '13', '2.8(1.1-7.1)', 'All', 'sites', 'Spouse', 'smoked', '231', ':', '2.1(1.4-3.0)', 'Lung', 'Spouse', 'smoked', '2', 'Infinite', 'Breast', 'Spouse', 'smoked', '32', '2.0(0.9-4.3)', 'Cervix', 'Spouse', 'smoked', '56', '2.1(1.2-3.9)', 'Endocrine', 'glands', 'Spouse', 'smoked', '13', '4.4(1.2-17.4)', 'The', 'authors', 'present', 'analyses', 'adjusting', 'for', 'age,', 'race,', 'sex,', 'marital', 'status,', 'education,', 'occupation,', 'active', 'smoking', 'and', 'source', 'of', 'the', 'controls', '(friends', 'or', 'acquaintances/telephone', 'sample)', 'and', 'generally', 'find', 'that', 'relative', 'risk', 'estimates', 'and', 'conclusions', 'are', 'little', 'changed.', 'In', 'interpreting', 'the', 'results', 'from', 'this', 'study', 'it', 'should', 'be', 'noted', 'that', 'the', 'study', 'design', 'is', 'a', 'very', 'unusual', 'one.', 'The', 'cases', 'are', 'not', 'representative', 'of', 'cancer', 'cases', 'but', 'are', 'more', 'representative', 'of', 'cancer', 'survivors,', 'as', 'the', 'study', 'design', 'inevitably', 'means', 'underrepresentation', 'of', 'rapidly', 'fatal', 'cancers.', 'The', 'controls', 'were', 'selected', 'by', 'a', 'method', 'which', 'seems', 'unsatisfactory', '-', 'friends', 'of', 'cases', 'are', 'hardly', 'representative', 'of', 'the', 'SsIpral3coe']