Radiation dose in the thyroid and the thyroid cancer risk attributable to CT scans for pediatric patients in one general hospital of China.

Objective: To quantify the radiation dose in the thyroid attributable to different CT scans and to estimate the thyroid cancer risk in pediatric patients.

Methods: The information about pediatric patients who underwent CT scans was abstracted from the radiology information system in one general hospital between 1 January 2012 and 31 December 2012. The radiation doses were calculated using the ImPACT Patient Dosimetry Calculator and the lifetime attributable risk (LAR) of thyroid cancer incidence was estimated based on the National Academies Biologic Effects of Ionizing Radiation VII model.

[Effects of rush mat dust exposure and smoking on workers' FEV1.0].

Objective: To study the effect of smoking and rush-mat dust exposure on pulmonary function.

Method: 122 rush-mat dust exposed workers and 118 controls without dust exposure were selected. Questionnaire and FEVY1.

[Effect of bisphenol A on semen quality of exposed workers: a pilot study].

Objective: To explore the semen quality of the workers exposed to the xenoestrogen bisphenol A (BPA) was explored.

Methods: A cross-sectional study of 20 BPA exposed and 16 control workers with similar age, physical activities was performed. Tests included quantifying BPA in blood samples and investigating the quantity and quality of semen.

[Synergistic interaction between MMP-3, VDR gene polymorphisms and occupational risk factors on lumbar disc degeneration].

Objective: To explore the synergistic interaction between MMP-3,VDR gene polymorphisms and occupational risk factors on lumbar disc degeneration.

Methods: A case-control study including 178 cases of lumbar disc degeneration and 284 controls was carried out through questionnaire and polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technology. Additive model was used to analyze the synergistic interaction between gene polymorphisms and occupational risk factors.

Matrix metalloproteinase-3 and vitamin d receptor genetic polymorphisms, and their interactions with occupational exposure in lumbar disc degeneration.

Objectives: To investigate the occupational and genetic risk factors inducing lumbar disc degeneration in a Chinese population, and to explore their synergistic interactions.

Methods: A case-control study involving 178 low back pain patients with lumbar disc degeneration and 284 controls was carried out. Five types of work-related factors were investigated using questionnaires.

[A psychophysical evaluation of NIOSH Lifting Equation in a Chinese young male population: a pilot study].

Objective: To determine the maximum acceptable weight of lift (MAWL) in a Chinese young male population, and examine whether the revised weight limit recommended by the US. National Institute for Occupational Safety and Health can be used for Chinese workers.

Methods: Eleven young male college students participated in the experiment.

Lung disorders of workers exposed to rush smear dust in China.

The aim of this study was to evaluate the lung disorders of the workers exposed to rush smear dust. A cross sectional study was carried out on 1,709 current workers (788 male, 921 female) in 80 factories. All subjects were asked by questionnaire, and health examination including chest X-ray was conducted for 661 workers in 35 factories.

[Isometric muscle strength measurements and assessment: a pilot study].

Objective: To determine the anthropometric parameters and the isometric muscle strength in a working population sample in China, and to investigate the relationship between muscle strength and individual attributes, such as age, gender, height and weight.

Methods: The study population consisted of 146 male and 47 female people including workers, administrators and college students. Four types of muscle strength, i.

[Study on lifting-related musculoskeletal disorders among workers in metal processing].

Objective: To investigate lifting-related musculoskeletal disorders in metal processing, to analyze the risk factors, and to study the validity and feasibility of using NIOSH lifting equation in China.

Methods: The questionnaires of semi-structured interview, the Ovako Working Posture Analysing System (OWAS) postural analysis and variables of the NIOSH equation were applied to the study. The study population consisted of 69 workers mainly involved in manual materials handling (MMH), categorized as Job A; and 51 machinery workers, served as controls, that were less MMH task involved, as Job B.

Study on musculoskeletal disorders in a machinery manufacturing plant.

Musculoskeletal disorders and related risk factors in machinery manufacturing were investigated using interviews, postural analysis, and the revised National Institute for Occupational Safety & Health lifting equation. Sixty-nine workers involved in manual materials handling (Job A) and 51 machinery workers less involved with manual material-handling tasks (Job B) were studied. Low back pain (LBP) (at least one episode lasting for 24 hours or more in past 12 months) prevalence rates were 63.

[Effects of rush-mat dust on the health of exposed workers].

Objective: To evaluate the effect of exposure to rush-mat dust on the health of workers.

Methods: A cross sectional study of 661 workers (349 men, 312 women) from 35 rush-mat plants was carried out by using occupational health investigation, questionnare and physical examination.

Results: The geometric mean total dust concentration in the workshop was up to 20.