Standardized Mortality Ratio

Standard Mortality Ratio (SMR)—A ratio of the observed number of deaths and the expected number of deaths in a specific standard population. 

PEL Pg pmol PHS PMR ppb ppm ppt REL RfD RTECS sec SCE SIC SIR SMR STEL STORET TLV TSCA TRI TRS TWA u.s. UF yr WHO wk permissible exposure limit picogram picomole Public Health Service proportionate mortality ratio parts per billion parts per million parts per trillion recommended exposure limit Reference Dose Registry of Toxic Effects of Chemical Substances second sister chromatid exchange Standard Industrial Classification Standardized incidence ratio standard mortality ratio short term exposure limit STORAGE and RETRIEVAL threshold limit value Toxic Substances Control Act Toxics Release Inventory total reduced sulfur time-weighted average United States uncertainty factor year World Health Organization week... 

A standardized mortality ratio of 100 for any given cause of death would indicate that the risk of Adventists dying from that cause is... 

Age-Standardized Mortality Ratios for Selected Causes of Death Among 25,000 White California Adventists, 1960-1980... 

CAUSE of DEATH STANDARDIZED MORTALITY RATIO (100 x obs/exp) NUMBER of DEATHS (both sexes), ... 

A mortality study of 1014 men employed between 1937 and 1971 in a Texas antimony smelter found increased mortality from lung cancer (standardized mortality ratio 1.39) and a positive trend in mortality with increasing duration of exposure. The data also suggested some increased mortality from nonmalignant respiratory heart disease in these workers. 

Another large retrospective cohort study followed 3916 smelter workers and reported an overall standardized mortality ratio of 372." Lung cancer mortality was related to intensity of exposure but not to duration. Histologic types of lung carcinomas were similar to those seen in smokers. 

A few studies have reported an association between bladder and renal cancers and occupations having the potential for exposures to asphalt. In an historical cohort study of 1320 workers in the asphalt industry, there was a significant increase in brain cancer [standardized mortality ratio (SMR) 500] but not in respiratory, bladder, or gastrointestinal cancer. Of 679 Danish men who were heavily exposed to asphalt, significant increases occurred in the incidences of cancer of the mouth (SMR 1111), esophagus (698), rectum (318), and lung (344). ... 

An update of a retrospective cohort mortality study of 2588 US workers exposed to PCBs in two capacitor manufacturing plants found a statistically significant excess for cancer of the liver and biliary passages [5 observed vs. 1.9 expected, standardized mortality ratio (SMR) 263]. Both Aroclor 1254 (54% chlorine) and 1242 (42% chlorine) had been used at... 

A follow-up of CMME (BCME) workers found no increased risk of respiratory cancer among those exposed less than 1 year to a 12-fold increase among those exposed 10 years or more. Latency did not appear to be inversely related to dose but, instead, peaked at approximately 20 years from initial exposure. After 30 years of observation 25 of 67 deaths in CMME (BCME)-exposed chemical workers were due to lung cancer (80% small cell carcinoma). Standardized mortality ratios were elevated among the moderately and heavily exposed workers and peaked at 23.1 the first decade and then declined to 7.4 and 7.9 in later decades. ... 

In a study of 22,010 US male aluminum reduction workers with over 5 years employment in the industry, there was a slight positive association with lung cancer [standardized mortality ratio (SMR) = 121], which was somewhat stronger in Soderherg workers (SMR = 162). There was a slight, hut not statistically significant, excess of leukemia (SMR= 170) and lymphoma (SMR = 125) in potroom workers. 

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