(41·29 to 42·22)*4Occupational exposure to second-hand smoke12·58 (5·66 to 21·95)12·96 (5·67 to 22·91)13·77 (6·00 to 24·44)3·02 (0·61 to 4·26)*6·23 (5·39 to 6·83)*9·44 (6·25 to 11·25)*10·65 (4·83 to 18·85)11·47 (5·11 to 20·49)12·18 (5·39 to 21·86)7·69 (5·75 to 8·77)*6·17 (5·33 to 6·69)*14·33 (11·51 to 15·87)*11·63 (8·77 to 13·29)*4Occupational exposure to formaldehyde0·79 (0·77 to 0·81)0·91 (0·88 to 0·93)1·01 (0·98 to 1·03)14·91 (14·45 to 15·39)*10·67 (10·41 to 10·94)*27·17 (26·49 to 27·88)*0·57 (0·55 to 0·58)0·70 (0·67 to 0·72)0·80 (0·77 to 0·82)22·93 (21·84 to 23·99)*14·63 (14·06 to 15·25)*40·92 (39·83 to 42·05)*32·87 (32·25 to 33·48)*4Occupational exposure to nickel1·60 (0·00 to 7·78)1·67 (0·00 to 8·37)1·75 (0·00 to 8·89)4·62 (−3·15 to 7·54)4·52 (1·26 to 6·14)*9·36 (−1·85 to 14·13)1·07 (0·00 to 4·86)1·18 (0·00 to 5·65)1·27 (0·00 to 6·20)10·38 (−1·64 to 15·93)7·75 (3·07 to 10·22)*18·93 (1·74 to 27·60)*13·25 (−0·43 to 19·36)4Occupational exposure to polycyclic aromatic hydrocarbons0·80 (0·79 to 0·81)0·93 (0·92 to 0·94)1·05 (1·03 to 1·06)17·04 (16·72 to 17·34)*11·89 (11·71 to 12·09)*30·96 (30·53 to 31·40)*0·58 (0·58 to 0·59)0·74 (0·73 to 0·75)0·86 (0·85 to 0·88)26·50 (25·77 to 27·17)*16·77 (16·27 to 17·29)*47·71 (46·91 to 48·49)*38·08 (37·65 to 38·52)*4Occupational exposure to silica5·76 (2·34 to 14·58)5·97 (2·59 to 14·73)6·21 (2·78 to 15·06)3·67 (0·97 to 10·72)*4·05 (2·23 to 7·26)*7·87 (3·25 to 18·79)*3·11 (1·19 to 7·93)3·16 (1·34 to
