Document oe927J4Y3Kkr12a64ovgVnOV3

ASBESTOS EXPOSURE OF BRAKE REPAIR WORKERS 215 TABLE VI Ciowi/icatton of Ihilmonary Function tn Vehicular Maintenance Worker* FEWFVC > .75 fef,,/ FVC > JO FEF,./ FVC < .30 JVC < .75* .SB > FEV,/ FVC* FVC/VC pred i .00 FVC/VC pred - .70-.79 FVC/VC pred S .69 Normal Restrictive Restrictive Obstructive Combined Combined Obstructive Combined Combined Obstructive Obstructive Combined Note: all those with FEV./FVC < .75 also had FEF../FVC < .30 TABLE VII Pulmonary Function Abnormalities in 87 Vehicular Maintenance Workers with over tO Years Experience Number Percent Restrictive Obstructive Combined Any abnormalities 14 18% 32 87% 11 18% 57 86% TABLE VUt Restriction of Pulmonary Function by Yeor of Onset of Work in SO Vehicular Maintenance Workers TtMvf restrictive 1956-65 Abnormal 1946-55 Before 1948 Yes No Yes No Ym No 25 l IS 14 28 10 19 (6%) (33%) (34%) For before 1956 compared with 1956 and after: X* - 4.84 .05 > p > .02 TABLE IX Relationship between Obstruction or Restriction and Smoking in Vehicular Maintenance Workers Number of Subjects Current Smoker* Never Smoked Ex-Smoker* Normal 3! 10 13 8 Obstructive 31 15 5 11 Restrictive 14 3 6 5 Combined 11 5 1 6 Total 87 33 25 29 For restriction X* - .01 N.S. (smoke's end ex-sinokers compered with never smoked) For obstruction X* - 8.28 .01 > p > .001 Those in the combined group counted as being both obstructive and restrictive