Inceneritori, studi scientifici modificati per attestare la loro innocuità

Inceneritori, studi scientifici modificati per attestare la loro innocuità

3 dicembre, 2009 by while

ISDE , Associazione apartitica, senza scopo di lucro, articolata anche sul territorio nazionale italiano, riconosciuta da Agenzie quali l’Organizzazione Mondiale della Sanità e il Consiglio Economico e Sociale delle Nazioni Unite, afferma tramite un comunicato, che sono stati modificati i risultati di studi scientifici per attestare innocuità degli inceneritori e supportare la scelta dell’incenerimento dei rifiuti in documenti ad uso delle Amministrazioni. L’articolo incriminato è comparso sui Quaderni di Ingegneria Ambientale. L’autore cita il lavoro di Elliot P (Cancer incidence near municipal solid waste incinerators in Great Britain), nel seguente modo: “La conclusione degli Autori è che non è stata trovata alcuna evidenza di diversità di incidenza e mortalità per cancro nei 7.5 Km di raggio studiati ed in particolare nessun declino con la distanza dall’inceneritore per tutti i tumori…”. Nel lavoro originale Elliot ha scritto: “Observed-expected ratios were tested for decline in risk with distance up to 7.5 km… Over the two stages of the study was a statistically significant (P<0.05) decline in risk with distance from incinerators for all cancers combined, stomach, colorectal, liver and lung cancer”, quindi esattamente il contrario di quanto riportato dall’autore. Cancer incidence near municipal solid waste incinerators in Great Britain.


P. Elliott, G. Shaddick, I. Kleinschmidt, D. Jolley, P. Walls, J. Beresford, and C. Grundy
Small Area Health Statistics Unit, Department of Public Health and Policy, London School of Hygiene and Tropical Medicine, UK.
This article has been cited by other articles in PMC.
Abstract
By use of the postcoded database held by the Small Area Health Statistic Unit, cancer incidence of over 14 million people living near 72 municipal solid waste incinerators in Great Britain was examined from 1974-86 (England), 1974-84 (Wales) and 1975-87 (Scotland). Numbers of observed cases were compared with expected numbers calculated from national rates (regionally adjusted) after stratification by a deprivation index based on 1981 census small area statistics. Observed-expected ratios were tested for decline in risk with distance up to 7.5 km. The study was conducted in two stages: the first involved a stratified random sample of 20 incinerators; the second the remaining 52 incinerators. Over the two stages of the study was a statistically significant (P<0.05) decline in risk with distance from incinerators for all cancers combined, stomach, colorectal, liver and lung cancer. Among these cancers in the second stage, the excess from 0 to 1 km ranged from 37% for liver cancer (0.95) excess cases 10(-5) per year to 5% for colorectal cancer. There was evidence of residual confounding near the incinerators, which seems to be a likely explanation of the finding for all cancers, stomach and lung, and also to explain at least part of the excess of liver cancer. For this reason and because of a substantial level of misdiagnosis (mainly secondary tumours) found among registrations and death certificates for liver cancer, further investigation, including histological review of the cases, is to be done to help determine whether or not there is an increase in primary liver cancer in the vicinity of incinerators.Full text
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2074344/pdf/brjcancer00033-0150.pdf