Cancer deaths in a cohort of Japanese barbers in Aichi Prefecture.
Barbers have frequent occasion to come in contact with hair and beauty products that contain many chemical substances, which could have harmful effects on health. Subjects were barbers belonging to the Barbers' Union of Aichi Prefecture who responded to a questionnaire in 1976. Deaths from all sites of cancers in the subjects were observed over 27 years. Mortalities of several cancers in the subjects were compared with individuals in the Japanese population, calculating standardized mortality ratios (SMRs) using the general Japanese population as a standard. Subjects included 8,360 people (4,674 men). There were a total of 551 deaths (469 men) during the follow-up period, and 277 deaths (211 men) from all cancers. The male and female SMRs (95% CI) were 0.62 (0.58-0.66) and 0.25 (0.16-0.34) for all deaths, 0.46 (0.39-0.53) and 0.41 (0.35-0.53) for all cancers combined, 0.49 (0.35-0.63) and 0.40 (0.12-0.68) for stomach, 0.40 (0.24-0.56) and 0.30 (0.10-0.70) for lung, 0.56 (0.39-0.73) and 0.26 (0.02-0.76) for liver, 0.38 (0.16-0.60) and 0.30 (0.07-0.67) for colon, and 0.48 (0.08-0.88) and 0.22 (0.04-0.79) for blood cancers, respectively, with significantly fewer deaths than in the general populace. The female SMRs were 0.90 (0.74-4.06) for breast and 0.55 (0.06-1.04) for ovarian, lacking significance. Thus, no excess mortality of any cancer sites was observed compared with the general population in both Japan and Aichi Prefecture.
Sugiura
Shuji
S
Department of Public Health, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan.
Yagyu
Kiyoko
K
Obata
Yuki
Y
Lin
Yingsong
Y
Tamakoshi
Akiko
A
Ito
Hidemi
H
Matsuo
Keitarou
K
Tajima
Kazuo
K
Aoki
Kunio
K
Kikuchi
Shogo
S
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001461:Barbering; D002423:Cause of Death; D015331:Cohort Studies; D016001:Confidence Intervals; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000401:mortality*; D009784:Occupational Diseases / Q000401:mortality*; D016273:Occupational Exposure; D011795:Surveys and Questionnaires