The Italian surveillance system for occupational cancers: characteristics, initial results, and future prospects

A 7-Year Active Surveillance Experience for Occupational Lung Cancer in Bologna, Italy (2017-2023)

BACKGROUND

In Italy, lung cancer is the second most frequent neoplasm in men and the third in women. Exposure to carcinogens in workplaces plays a significant role. Still, cases attributable to occupational exposure are currently under-reported as occupational diseases: the current National Prevention Plan also encourages active research projects for the detection of cancers attributable to occupational exposure.

METHODS

The Unit of Prevention and Safety in the Workplace of Bologna Local Health Authority (Azienda Unità Sanitaria Locale-AUSL-)created a network for active surveillance of occupational lung cancer cases with the dedicated Diagnostic and Therapeutic Care Pathways(PDTA). Possible occupational exposure cases were selected within all incident PDTA cases using a self-completed patient filter form. Only patients selected through the form were interviewed; occupational physicians collected personal, occupational, and clinical history. Definition of a cooperation system with the local office of the National Institute for Insurance(INAIL)for monitoring the process during the medico-legal assessments conducted by the insurance institute up to resolution.

RESULTS

453 cases completed the filter form, 177 had a potential occupational exposure. Of these, 140 accepted the direct interview with occupational physicians. One hundred eleven cases interviewed were assessed with sure or suspect occupational origin: for 82, a claim for recognition was sent to the INAIL, while for the other 29 was sent to INAIL a report for epidemiological purposes. Out of 82 compensation claims, 18 individuals (4 females and 14 males) received compensation, while 4 cases remain under investigation. A total of 53 claims were rejected: 54.7% for lack of exposure to risk factors, 24.5% for insufficient exposure, 9.4% due to inadequate administrative documentation, 7.5% because of insufficient clinical documentation, and 3.8% for the absence of causal association.

CONCLUSIONS

Several occupational lung cancers were found that otherwise would have been unrecognized. Asbestos was the most frequent agent occurring in the most widespread work sectors-construction and manufacture of metalworking products-and in the period of exposure from 1970 to 1980. Other relevant agents were welding fumes and polycyclic aromatic hydrocarbons. Active surveillance, direct patient interviews, and claims for recognition integrated by a complementary report are essential to increase the INAIL compensation rate.

Cancer mortality and sectors of employment: a cohort study in Italy

BACKGROUND

Cancer is a multifactorial disease. The large impact of occupational exposure on the burden of cancer continues to be a paramount public health concern that deserves more attention. The study aims to evaluate cancer-specific mortality risk in relation to sectors of employment.

METHODS

We used a cohort from the Rome Longitudinal Study (ROL) and linked it with the National Social Insurance Agency (INPS) database to obtain working histories. We considered the longest duration of employment in a sector as a proxy of exposure, and insurance activities as the reference category. A Cox regression adjusted model was used to examine the associations between cancer-specific causes of death and the sector of employment in men and women. A similar analysis was performed considering the length of employment (≤ 10 years versus ≥ 10 years).

RESULTS

The study population comprised 910,559 (52% of the total population of the cohort after linkage with INPS) 30 + yr employees (53% men and 47% women) followed for a total period of approximately 7 million years. The outcomes confirmed some well-known associations (e.g. lung and pleura in construction, pleura in paper and printing, and lung in wood and leather) and suggested possible high-risk sectors that have not yet been thoroughly investigated. In men we observed an increased mortality risk for stomach cancer in the printing and paper industry (HR = 1.69, 95% CI:1.11-2.57) as well as for stomach and lung cancer in cleaning activities (HR = 1.98, 95% CI:1.13-3.49 and HR = 1.55, 95% CI:1.22-1.98, respectively). Among women, there was an elevated mortality risk in the cleaning industry for all malignant cancers (HR = 1.15, 95% CI:1.03-1.29), liver cancer (HR = 1.94, 95% CI:1.08-3.48) and cancer of the lympho-hematopoietic tissue (HR = 1.65, 95% CI:1.09-2.50).

CONCLUSIONS

The results showed an increased risk of cancer death in some traditional industrial sectors compared to the reference category of insurance activities such as construction and wood and leather products and limited evidence in sectors like cleaning, accommodation and food services and hairdressing. The adopted method proved to be effective in monitoring occupational risks and activating proper prevention initiatives and further insights.

Cancer-Specific Mortality Odds Ratios in the Food, Accommodation, and Beverage Activities in Italy

OBJECTIVES

This study investigated cancer-specific mortality risks of workers employed in food, accommodation and beverage (FAB) activities. Methods: We performed a case-control study based on countrywide mortality and National Social Insurance data. Adjusted cancer-specific mortality odds ratios (MOR) were calculated. We modeled occupational exposure as "ever/never been employed" in FAB activities, using other sectors as reference. Analysis was performed by gender, length of employment and year of smoke banning. Results: About 20,000 cancer deaths in FAB were analyzed. Working in restaurants was positively associated with cancer of lung (MOR = 1.24), bladder (MOR = 1.24), pharynx, and larynx. Accommodation was associated with cancer of pharynx (MOR = 1.46), while beverage with cancer of liver (MOR = 1.22). Gender, length of employment and smoke banning were found effective in modifying some risks. Conclusions: Workers in FAB sectors were at risk for several cancers.

Occupational Mortality Matrix: A Tool for Epidemiological Assessment of Work-Related Risk Based on Current Data Sources

Mortality from occupational diseases significantly afflicts society, in terms of both economic costs and human suffering. The International Labour Organization (ILO) estimated that 2.4 million workers die from work-related diseases every year. In Europe, around 80,000 workers die from cancer attributed to occupational exposure to carcinogens. This study developed the Occupational Mortality Matrix (OMM) aimed to identify significant associations between causes of death and occupational sectors through an individual record linkage between mortality data and the administrative archive of occupational histories. The study population consisted of 6,433,492 deceased subjects in Italy (in the period 2005-2015), of which 2,723,152 records of work histories were retrieved (42%). The proportional mortality ratio (PMR) was estimated to investigate the excess of mortality for specific causes associated with occupational sectors. Higher PMRs were reported for traditionally risky occupations such as shipbuilding for mesothelioma cases (PMR: 8.15; 95% CI: 7.28-9.13) and leather production for sino-nasal cancer (PMR: 5.04; 95% CI: 3.54-7.19), as well as for unexpected risks such as male breast cancer in the pharmaceutical industry (PMR: 2.56; 95% CI: 1.33-4.93) and brain cancer in railways (PMR: 1.43; 95% CI: 1.24-1.66). The OMM proved to be a valid tool for research studies to generate hypotheses about the occupational etiology of diseases, and to monitor and support priority actions for risk reduction in workplaces.

Occupational Health and Safety Statistics as an Indicator of Worker Physical Health in South African Industry

Operations in general industry, including manufacturing, expose employees to a myriad of occupational health hazards. To prevent exposure, occupational health and safety regulations were enacted, with both employers and workers instituting various risk reduction measures. The analysis of available occupational disease and injury statistics (indicators of worker physical health) can be used to infer the effectiveness of risk reduction measures and regulations in preventing exposure. Thus, using the READ approach, analyses of occupational disease and injury statistics from South African industry, derived from annual reports of the Compensation Fund, were conducted. The publicly available database of occupational disease and injury statistics from the South African general industry is unstructured, and the data are inconsistently reported. This data scarcity, symptomatic of an absence of a functional occupational disease surveillance system, complicates judgement making regarding the effectiveness of implemented risk reduction measures, enacted occupational health and safety regulations and the status of worker physical health from exposure to workplace hazards. The statistics, where available, indicate that workers continue to be exposed to occupational health impacts within general industry, notwithstanding risk reduction measures and enacted regulations. In particular, worker physical health continues to be impacted by occupational injuries and noise-induced hearing loss. This is suggestive of shortcomings and inefficiencies in industry-implemented preventive measures and the regulatory state. A robust national occupational disease surveillance system is a regulatory tool that should detect and direct policy responses to identified occupational health hazards.

Estimation of Occupational Exposure to Asbestos in Italy by the Linkage of Mesothelioma Registry (ReNaM) and National Insurance Archives. Methodology and Results

The identification and monitoring of occupational cancer is an important aspect of occupational health protection. The Italian law on the protection of workers (D. Leg. 81/2008) includes different cancer monitoring systems for high and low etiologic fraction tumors. Record linkage between cancer registries and administrative data is a convenient procedure for occupational cancer monitoring. We aim to: (i) Create a list of industries with asbestos exposure and (ii) identify cancer cases who worked in these industries. The Italian National Mesothelioma Registry (ReNaM) includes information on occupational asbestos exposure of malignant mesothelioma (MM) cases. We developed using data from seven Italian regions a methodology for listing the industries with potential exposure to asbestos linking ReNaM to Italian National Social Security Institute (INPS) data. The methodology is iterative and adjusts for imprecision and inaccuracy in reporting firm names at interview. The list of asbestos exposing firms was applied to the list of cancer cases (all types associated or possibly associated with asbestos according to International Agency for Research on Cancer (IARC) monograph 100C) in two Italian regions for the indication of possible asbestos exposure. Eighteen percent of the cancer cases showed at least one work period in firms potentially exposing to asbestos, 48% of which in regions different from where the cases lived at diagnosis. The methodology offers support for the preliminary screening of asbestos exposing firms in the occupational history of cancer cases.

Mortality study of employees at a chemical manufacturing plant using administrative databases

BACKGROUND

This study investigated mortality in a cohort of 1,988 male workers at a chemical manufacturing plant (1981-2011) and evaluated the quality of the results obtained using administrative databases.

METHODS

Information about the workers was obtained from the archives of the Italian National Institute for Social Insurance. Vital status and causes of death were ascertained through record linkage with electronic archives and follow-up mailing. Regional reference rates were used to calculate standardized mortality ratios (SMRs) and 90% confidence intervals (CI).

RESULTS

The analysis showed increased SMR for selected cancers of a priori interest: respiratory system (SMR: 126.8; 90%CI: 105-152), pleura (330.5; 90%CI 164-596), and non-Hodgkin lymphoma (196.1; 90%CI 102-342).

CONCLUSIONS

The results indicate an effect of hazardous exposures among workers in this chemical manufacturing plant. Using administrative databases to construct historical cohorts is an efficient method in time and resources, for estimating the risk of mortality and generating hypotheses. Am. J. Ind. Med. 59:866-876, 2016. © 2016 Wiley Periodicals, Inc.

Prevention and Early Detection of Occupational Cancers - a View of Information Technology Solutions

Thousands of people die each year from cancer due to occupational causes. To reduce cancer in workers, preventive strategies should be used in the high-risk workplace. The effective prevention of occupational cancer requires knowledge of carcinogen agents. Like other areas of healthcare industry, occupational health has been affected by information technology solutions to improve prevention, early detection, treatment and finally the efficiency and cost effectiveness of the healthcare system. Information technology solutions are thus an important issue in the healthcare field. Information about occupational cancer in information systems is important for policy makers, managers, physicians, patients and researchers; because examples that include high quality data about occupational cancer patients and occupational cancer causes are able to determine the worker groups which require special attention. As a result exposed workers who are vulnerable can undergo screening and be considered for preventive interventions.

Reducing the underreporting of lung cancer attributable to occupation: outcomes from a hospital-based systematic search in Northern Italy

PURPOSE

Occupational exposure to lung carcinogens is and was common in workplaces. 5-25 % of lung cancers (LCs) could be causally attributable to occupation; however, LC underreporting and undercompensation are widespread, with remarkable tolls paid by individuals and society. This work aims to: describe an ongoing hospital-based systematic search (SS) of occupational LC; improve aetiological diagnosis; increase number and quality of LC notifications.

METHODS

Through a short form, physicians at a public hospital referred incident LC to the Occupational Health Unit (OHU). Only patients selected through the form were interviewed; a personal, occupational and clinical history was collected; reports were sent to the ward and Local Health Authority, with aetiological diagnosis criteria and probability of causation.

RESULTS

From 1998 to 2013, 3274 cases of LC were notified to the OHU; prior to the system, just couple of dozens were assessed. A total of 1522 patients were fully interviewed; in 395 cases, causation was attributed to occupation (26 % of interviewed patients); all were notified to authorities, as compared to the handful reported before the system was adopted. Main aetiological agents were silica, asbestos, polycyclic aromatic hydrocarbons, truck driving, painting, multiple exposures. Compensation rate was remarkable (39 %).

CONCLUSIONS

Through SS, many occupational LCs were found that otherwise would have been lost. Aetiological diagnosis proved to be rich of scientific advantages and practical implications, with attention to equity and social aspects. SS was easy, accountable and fostered multidisciplinary collaboration among medical specialties, significantly reducing underreporting and undercompensation of occupational LC.

Female breast cancer in Lombardy, Italy (2002-2009): a case-control study on occupational risks

BACKGROUND

The role of occupational exposures in breast cancer development is still uncertain and, to our knowledge, no studies have been recently carried out in Italy to provide a comprehensive estimation of this possible risk.

METHODS

Based on administrative data, a case-control study was carried out recruiting all incident cases of female breast cancer in the period 2002-2009, aged between 35 and 69 years, residing in Lombardy, Italy. Controls were randomly sampled from all women residing in Lombardy as of December 31, 2005. Occupational histories, including blue-collar status, were available from 1974 through record linkage with a social security pension database, and were obtained for 11,188 cases and 25,329 controls. Adjusted odds ratios (ORs) and corresponding 90% confidence intervals (CIs) were calculated using multiple unconditional logistic regression models, including terms for sectors of longest employment and for duration of employment. Multiple comparisons were accounted for according to the Benjamini-Hochberg method.

RESULTS

The ORs for female breast cancer were modestly but significantly increased for employment in electrical manufacturing (OR 1.12, 90%CI 1.04-1.21), textile (OR 1.08, 90%CI 1.02-1.15), paper (OR 1.25, 90%CI 1.06-1.46) and rubber (OR 1.26, 90%CI 1.03-1.54) industries. Analysis by duration of employment within sectors showed significantly increased ORs for electrical manufacturing and rubber industries. After adjustment for multiple comparisons no estimates remained statistically significant.

CONCLUSIONS

Although with several limitations, our results point to a possible role of exposures in electrical manufacturing, textile, paper and rubber industries in the process leading to breast cancer. An in-dept study for the electrical manufacturing industry has been already planned.

A new Italian surveillance system for occupational injuries: characteristics and initial results

BACKGROUND

Occupational injuries research and surveillance is important for prevention and public health protection. A new occupational surveillance system based on linkage of work histories calculated from the Italian National Social Security Institute (INPS) and occupational injuries provided by the National Insurance Institute for Occupational Injuries (INAIL) was created and assessed.

METHODS

It has been extracted a 1% sample of individuals from INPS. For each subject, a detailed description of the career has been compiled between 1985 and 2004, and matched on an individual basis to work injuries between 1994 and 2003. It has been calculated injury rates and risks by economic activity, gender, age, job tenure, country of birth, and firm size.

RESULTS

The linkage success is very high both in engineering than in the construction sector. The comparison with Eurostat statistics is very positive. The injury risks calculated by job tenure, country of birth, and firm size are consistent with literature. The high injury rate for short work contracts remain unvaried also after controlling by age.

CONCLUSIONS

It is finally possible to describe injuries based on some main characteristics of the recent changes in the labor market, such as precarization, ageing of workers, migration, that databases currently available in Italy do not allow. The sample is longitudinal and can contribute to describing the development of the phenomena over time. The Ministry of Health is completing procedures to extend the sample and to increase the health outcomes for which a follow-up is available.

Lung cancer risk in the electroplating industry in Lombardy, Italy, using the Italian occupational cancer monitoring (OCCAM) information system

BACKGROUND

Occupational Cancer Monitoring (OCCAM) is an Italian organization that monitors occupational cancers, by area and industrial sector, by retrieving cases and employment history from official databases. OCCAM previously estimated a relative risk (RR) of lung cancer of about 1.32 among "metal treatment" workers in Lombardy, northern Italy, potentially exposed to chrome and nickel. In the present study, lung cancer risk was estimated among electroplating workers only.

METHODS

Lombardy electroplating companies were identified from descriptions in Social Security files. Lung cancer risk was evaluated from 2001 to 2008 incident cases identified from hospital discharge records.

RESULTS

The RR for lung cancer among electroplating workers was 2.03 (90% CI 1.33-3.10, 18 cases) for men; 3.00 (90% CI 1.38-9.03, 4 cases) for women.

CONCLUSIONS

Electroplaters had higher risks than "metal treatment" workers. Although the risks were due to past exposure, case histories and recent acute effects indicate a present carcinogenic hazard in some Lombardy electroplating factories.

Sarcoma risk and dioxin emissions from incinerators and industrial plants: a population-based case-control study (Italy)

BACKGROUND

It is not clear whether environmental exposure to dioxin affects the general population. The aim of this research is to evaluate sarcoma risk in relation to the environmental pollution caused by dioxin emitted by waste incinerators and industrial sources of airborne dioxin. The study population lives in a part of the Province of Venice (Italy), where a population-based cancer registry (Veneto Tumour Registry--RTV) has been active since 1987.

METHODS

Two hundred and five cases of visceral and extravisceral sarcoma, confirmed by microscopic examination, diagnosed from 01.01.1990 to 31.12.1996, were extracted from the RTV database. Diagnoses were revised using the actual pathology reports and clinical records. For each sarcoma case, three controls of the same age and sex were randomly selected from the population files of the Local Health Units (LHUs). The residential history of each subject, whether case or control, was reconstructed, address by address, from 1960 to the date of diagnosis. All waste incinerators and industrial sources of airborne dioxin in the Province of Venice were taken into account, as was one very large municipal waste incinerator outside the area but close to its boundaries. The Industrial Source Complex Model in Long Term mode, version 3 (ISCLT3), was used to assess the level of atmospheric dispersion. A specific value for exposure was calculated for each point (geo-referenced address) and for each calendar year; the exposure value for each subject is expressed as the average of specific time-weighted values. The analysis takes into account 172 cases and 405 controls, aged more than 14 years.

RESULTS

The risk of developing a sarcoma is 3.3 times higher (95% Confidence Interval--95% CI: 1.24-8.76) among subjects, both sexes, with the longest exposure period and the highest exposure level ; a significant excess of risk was also observed in women (Odds Ratio OR = 2.41, 95% CI: 1.04-5.59) and for cancers of the connective and other soft tissue (International Classification of Diseases, ninth Revision--ICD-IX 171), both sexes (OR = 3.27, 95% CI: 1.35-7.93).

CONCLUSION

Our study supports the association between modelled dioxin exposure and sarcoma risk.