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Cost-Effectiveness of Coal Workers' Pneumoconiosis Prevention Based on Its Predicted Incidence within the Datong Coal Mine Group in China.

Shen F, Liu H, Yuan J, Han B, Cui K, Ding Y, Fan X, Cao H, Yao S, Suo X, Sun Z, Yun X, Hua Z, Chen J - PLoS ONE (2015)

Bottom Line: We calculate the economic loss caused by CWP and economic effectiveness of CWP prevention by a step-wise model.Investments in advanced dustproof equipment would be total 843 million RMB, according to our study; the ratio of investment to restored economic losses was 1:1.43.Controlling workplace dust concentrations is critical to reduce the onset of pneumoconiosis and to achieve economic benefits.

View Article: PubMed Central - PubMed

Affiliation: School of Public Health, China Medical University, Shenyang, Liaoning, 110013, P.R. China; School of Public Health, Hebei United University, Tangshan, Hebei, 063000, P.R. China.

ABSTRACT
We aimed to estimate the economic losses currently caused by coal workers' pneumoconiosis (CWP) and, on the basis of these measurements, confirm the economic benefit of preventive measures. Our cohort study included 1,847 patients with CWP and 43,742 coal workers without CWP who were registered in the employment records of the Datong Coal Mine Group. We calculated the cumulative incidence rate of pneumoconiosis using the life-table method. We used the dose-response relationship between cumulative incidence density and cumulative dust exposure to predict the future trend in the incidence of CWP. We calculate the economic loss caused by CWP and economic effectiveness of CWP prevention by a step-wise model. The cumulative incidence rates of CWP in the tunneling, mining, combining, and helping cohorts were 58.7%, 28.1%, 21.7%, and 4.0%, respectively. The cumulative incidence rates increased gradually with increasing cumulative dust exposure (CDE). We predicted 4,300 new CWP cases, assuming the dust concentrations remained at the levels of 2011. If advanced dustproof equipment was adopted, 537 fewer people would be diagnosed with CWP. In all, losses of 1.207 billion Renminbi (RMB, official currency of China) would be prevented and 4,698.8 healthy life years would be gained. Investments in advanced dustproof equipment would be total 843 million RMB, according to our study; the ratio of investment to restored economic losses was 1:1.43. Controlling workplace dust concentrations is critical to reduce the onset of pneumoconiosis and to achieve economic benefits.

No MeSH data available.


Related in: MedlinePlus

Cumulative incidence rate of CWP among coal workers.(A) Cumulative incidence rate of CWP in different occupational categories: tunneling cohort vs mining cohort (χ2 = 597.7; P < 0.001), tunneling cohort vs combining cohort (χ2 = 228.9; P < 0.001), tunneling cohort vs helping cohort (χ2 = 3,116.7; P < 0.001), mining cohort vs combining cohort (χ2 = 17.3; P < 0.001), mining cohort vs helping cohort (χ2 = 654.4; P < 0.001), and combining cohort vs helping cohort (χ2 = 827.9; P < 0.001). (B) Cumulative incidence rate of CWP according to years of first dust exposure: 1970s vs 1980s (χ2 = 27,432.5; P < 0.001). (C) Cumulative incidence rate of CWP according to cumulative dust exposure: ≥ 2000 mg·years group vs ≥ 100 mg·years group (χ2 = 338.1; P < 0.001), ≥ 2000 mg·years group vs < 100 mg·years group (χ2 = 1,867.9; P < 0.001), and ≥ 100 mg·years group vs < 100 mg·years group (χ2 = 308.9; P < 0.001).
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pone.0130958.g001: Cumulative incidence rate of CWP among coal workers.(A) Cumulative incidence rate of CWP in different occupational categories: tunneling cohort vs mining cohort (χ2 = 597.7; P < 0.001), tunneling cohort vs combining cohort (χ2 = 228.9; P < 0.001), tunneling cohort vs helping cohort (χ2 = 3,116.7; P < 0.001), mining cohort vs combining cohort (χ2 = 17.3; P < 0.001), mining cohort vs helping cohort (χ2 = 654.4; P < 0.001), and combining cohort vs helping cohort (χ2 = 827.9; P < 0.001). (B) Cumulative incidence rate of CWP according to years of first dust exposure: 1970s vs 1980s (χ2 = 27,432.5; P < 0.001). (C) Cumulative incidence rate of CWP according to cumulative dust exposure: ≥ 2000 mg·years group vs ≥ 100 mg·years group (χ2 = 338.1; P < 0.001), ≥ 2000 mg·years group vs < 100 mg·years group (χ2 = 1,867.9; P < 0.001), and ≥ 100 mg·years group vs < 100 mg·years group (χ2 = 308.9; P < 0.001).

Mentions: The cumulative incidence rates of CWP of tunneling, mining, combining, and helping cohorts were 58.7%, 28.1%, 21.7%, and 4.0%, respectively, during the 42-year observation period (Fig 1A). We observed significant differences between occupational categories, according to the log-rank test. The cumulative incidence rate of CWP in the group of workers first exposed to dust in the 1970s was 12.7% and the rate in the group first exposed to dust in the 1980s was 7.6% during the 32-year observation period (Fig 1B). The cumulative incidence rates were 25.4%, 7.3%, and 3.2% among coal workers whose CDEs were ≥ 2000 mg·years, ≥ 100 mg·years, and <100 mg·years during the 42-year observation period (Fig 1C). The dust concentration decreased with time in different work areas (Table 2). We observed a dose-response relationship between cumulative incidence rate and CDE (S1 Fig).


Cost-Effectiveness of Coal Workers' Pneumoconiosis Prevention Based on Its Predicted Incidence within the Datong Coal Mine Group in China.

Shen F, Liu H, Yuan J, Han B, Cui K, Ding Y, Fan X, Cao H, Yao S, Suo X, Sun Z, Yun X, Hua Z, Chen J - PLoS ONE (2015)

Cumulative incidence rate of CWP among coal workers.(A) Cumulative incidence rate of CWP in different occupational categories: tunneling cohort vs mining cohort (χ2 = 597.7; P < 0.001), tunneling cohort vs combining cohort (χ2 = 228.9; P < 0.001), tunneling cohort vs helping cohort (χ2 = 3,116.7; P < 0.001), mining cohort vs combining cohort (χ2 = 17.3; P < 0.001), mining cohort vs helping cohort (χ2 = 654.4; P < 0.001), and combining cohort vs helping cohort (χ2 = 827.9; P < 0.001). (B) Cumulative incidence rate of CWP according to years of first dust exposure: 1970s vs 1980s (χ2 = 27,432.5; P < 0.001). (C) Cumulative incidence rate of CWP according to cumulative dust exposure: ≥ 2000 mg·years group vs ≥ 100 mg·years group (χ2 = 338.1; P < 0.001), ≥ 2000 mg·years group vs < 100 mg·years group (χ2 = 1,867.9; P < 0.001), and ≥ 100 mg·years group vs < 100 mg·years group (χ2 = 308.9; P < 0.001).
© Copyright Policy
Related In: Results  -  Collection

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getmorefigures.php?uid=PMC4476760&req=5

pone.0130958.g001: Cumulative incidence rate of CWP among coal workers.(A) Cumulative incidence rate of CWP in different occupational categories: tunneling cohort vs mining cohort (χ2 = 597.7; P < 0.001), tunneling cohort vs combining cohort (χ2 = 228.9; P < 0.001), tunneling cohort vs helping cohort (χ2 = 3,116.7; P < 0.001), mining cohort vs combining cohort (χ2 = 17.3; P < 0.001), mining cohort vs helping cohort (χ2 = 654.4; P < 0.001), and combining cohort vs helping cohort (χ2 = 827.9; P < 0.001). (B) Cumulative incidence rate of CWP according to years of first dust exposure: 1970s vs 1980s (χ2 = 27,432.5; P < 0.001). (C) Cumulative incidence rate of CWP according to cumulative dust exposure: ≥ 2000 mg·years group vs ≥ 100 mg·years group (χ2 = 338.1; P < 0.001), ≥ 2000 mg·years group vs < 100 mg·years group (χ2 = 1,867.9; P < 0.001), and ≥ 100 mg·years group vs < 100 mg·years group (χ2 = 308.9; P < 0.001).
Mentions: The cumulative incidence rates of CWP of tunneling, mining, combining, and helping cohorts were 58.7%, 28.1%, 21.7%, and 4.0%, respectively, during the 42-year observation period (Fig 1A). We observed significant differences between occupational categories, according to the log-rank test. The cumulative incidence rate of CWP in the group of workers first exposed to dust in the 1970s was 12.7% and the rate in the group first exposed to dust in the 1980s was 7.6% during the 32-year observation period (Fig 1B). The cumulative incidence rates were 25.4%, 7.3%, and 3.2% among coal workers whose CDEs were ≥ 2000 mg·years, ≥ 100 mg·years, and <100 mg·years during the 42-year observation period (Fig 1C). The dust concentration decreased with time in different work areas (Table 2). We observed a dose-response relationship between cumulative incidence rate and CDE (S1 Fig).

Bottom Line: We calculate the economic loss caused by CWP and economic effectiveness of CWP prevention by a step-wise model.Investments in advanced dustproof equipment would be total 843 million RMB, according to our study; the ratio of investment to restored economic losses was 1:1.43.Controlling workplace dust concentrations is critical to reduce the onset of pneumoconiosis and to achieve economic benefits.

View Article: PubMed Central - PubMed

Affiliation: School of Public Health, China Medical University, Shenyang, Liaoning, 110013, P.R. China; School of Public Health, Hebei United University, Tangshan, Hebei, 063000, P.R. China.

ABSTRACT
We aimed to estimate the economic losses currently caused by coal workers' pneumoconiosis (CWP) and, on the basis of these measurements, confirm the economic benefit of preventive measures. Our cohort study included 1,847 patients with CWP and 43,742 coal workers without CWP who were registered in the employment records of the Datong Coal Mine Group. We calculated the cumulative incidence rate of pneumoconiosis using the life-table method. We used the dose-response relationship between cumulative incidence density and cumulative dust exposure to predict the future trend in the incidence of CWP. We calculate the economic loss caused by CWP and economic effectiveness of CWP prevention by a step-wise model. The cumulative incidence rates of CWP in the tunneling, mining, combining, and helping cohorts were 58.7%, 28.1%, 21.7%, and 4.0%, respectively. The cumulative incidence rates increased gradually with increasing cumulative dust exposure (CDE). We predicted 4,300 new CWP cases, assuming the dust concentrations remained at the levels of 2011. If advanced dustproof equipment was adopted, 537 fewer people would be diagnosed with CWP. In all, losses of 1.207 billion Renminbi (RMB, official currency of China) would be prevented and 4,698.8 healthy life years would be gained. Investments in advanced dustproof equipment would be total 843 million RMB, according to our study; the ratio of investment to restored economic losses was 1:1.43. Controlling workplace dust concentrations is critical to reduce the onset of pneumoconiosis and to achieve economic benefits.

No MeSH data available.


Related in: MedlinePlus