PubMed Health⌕ Search

Biomedical subjects

S Z Yu

Publications and source records attributed to S Z Yu.

At least 55 records · Page 3Linked to original sources
PubMed1989

Risk factors for cancer of the cervix in a rural Chinese population.

A population-based case-control study of 109 women with invasive squamous-cell cervical cancer and 545 controls matched for age and area of residence was carried out in Jingan, China, to evaluate the importance of different risk factors and the effect of cervical cancer screening. After controlling for the protective effect of cervical cancer screening, several factors were found to make an independent contribution to risk. These included the number of sexual partners of the subjects and their husbands (OR: 3.9 for 2 or more sexual partners other than the current spouse, relative to none; 5.9 for 2 or more other partners of the husband relative to none), and poor genital hygiene (OR: 4.8 for absence of daily genital washing relative to washing every day; 0.3 for use of sanitary napkin), these are consistent with an infectious etiology. In addition, menstrual characteristics also had a strong relationship to the risk of cervical cancer (OR: 2.2 for 4 or more days' menstruation relative to shorter duration; 5.4 for irregular menstruation).

Abortion, Spontaneous↗
PubMed1989

Smoking, occupational exposure to rubber, and lung cancer.

A cohort of 1624 employees (957 men, 667 women) in a rubber factory in Shanghai have been followed up since 1972 and their 12 year mortality experience is presented. The relative risk of lung cancer for smokers was 8.5 for men and 11.4 for women and for rubber workers exposed to curing agents or talc powder 3.2 for men and 4.6 for women.

China↗
PubMed1989

Cervical screening attendance and its effectiveness in a rural population in China.

The results of a cervical cancer screening program in a population of 22,106 women aged over 25 years in a rural county of China are evaluated in a case-control analysis. The relative risk of cervix cancer was 0.33 in women with three or more negative tests (compared with one or less) and 11.4 for women whose last negative smear was 8 or more years previously (compared with 2 years or less). Attendance at the screening program was positively associated with some risk factors for cervix cancer (sexual behavior of the woman and her partner) and negatively associated with others (genital hygiene). Controlling for the confounding effect of these risk factors resulted in only small changes in the estimate of the protective effect of screening.

Adult↗
PubMed1988

Chang-Ning epidemiological study of children's health: I: Passive smoking and children's respiratory diseases.

The effects of household exposure to cigarette smoke on hospitalization and incidence of respiratory illness were examined among 2227 children at Chang-Ning District, Shanghai Municipality, People's Republic of China. The passive smoking quantity was estimated by total daily cigarette consumption of family members and number of cigarettes smoked in the home. No mothers who smoked were found. A significant dose-response relationship of passive smoking to hospitalization for respiratory illness during the children's first 18 months of life was found, for which no confounding factors were discovered. The incidence density ratio of hospitalization for respiratory illness was 2.1 for children living in families including people who smoked 20 or more cigarettes a day compared with those living in non-smoking families. The children appeared to be more vulnerable in the first six months of life than in the 7-18 month period, and those with lower birth weight and the artificially fed were more susceptible. The cumulative incidence of bronchitis or pneumonia increased significantly with increasing cigarette smoking of family members, which persisted when sex, birthweight, nursery care, father's education, coal for cooking, and adult cases with chronic respiratory disease were taken into account. Family smoking status was not found to be significantly associated with the incidence of asthma, whooping cough, sinusitis and measles.

Birth Weight↗
PubMed1988

Indoor air pollution of coal fumes as a risk factor of stroke, Shanghai.

A cohort of 957 male persons in Shanghai has been followed up for 12 years after they entered a screening program for coronary heart disease and stroke. During the period of study, 24 of the subjects who had no previous history of heart disease and stroke died from stroke. Risk factors for stroke were analyzed by the Cox proportional hazards model. Coal fumes were found to be an independent risk factor for stroke in addition to diastolic blood pressure, age, and cigarette smoking.

Adult↗
PubMed1988

Artificial feeding and hospitalization in the first 18 months of life.

The association between type of feeding and hospitalization during the first 18 months of life was examined among 1,058 infants from Jing-An district, Shanghai, People's Republic of China. Infants who had never been fed with mother's milk were categorized as artificially fed; the remainder were breast-fed. The rate of hospitalization for first episodes of respiratory infections during the first 18 months of life for the artificially fed infants was 18.0% v 11.2% for the breast-fed infants (P less than .01). Multiple logistic regression analysis demonstrated that the adverse effect of artificial feeding on the hospitalization rate for respiratory infections was independent of birth weight, father's education, passive smoking, and any case(s) of chronic respiratory disease in the family. The adjusted odds ratio for the artificially fed infants compared with the breast-fed infants was 2.11. The artificially fed infants were also hospitalized more frequently for gastroenteritis and other conditions, but the differences were not significant.

Birth Weight↗
PubMed1983

Cancer mortality (1965-77) in relation to diesel fume and coal exposure in a cohort of retired railway workers.

A cohort study of 43,826 male pensioners of the Canadian National Railway Company was conducted. The cause of death of 17,838 pensioners who died between 1965 and 1977 was ascertained by computerized record linkage to the Canadian national mortality data base. The main finding was an elevated risk of lung cancer for those employed in occupations involving exposure to diesel fumes and coal dust, with highly significant dose-response relationships observed. That such association may be due in part to smoking cannot be excluded; but in view of the widespread exposure to diesel fumes, the finding warrants further investigation. The present study also demonstrated the utility and feasibility of large-scale occupational cohort studies conducted with the use of computerized record linkage to national mortality records.

Aged↗
PubMed1981

Studies on the phenomenon of latent propagated sensation along the channels. I. The discovery of a latent PSC and a preliminary study of its skin electrical conductance.

By combining electrical impulse stimuli with mechanical ones, we are able to trace out a new line of feeling, coincident with the classical channel course. Impulse stimulation was carried out at the Jing point of the Large Intestine or Stomach channel, namely Shangyan or Lidui. With a small rubber nipple, light taps were applied on the skin along the lines perpendicular to the channel and crossing over the acupuncture points; a specific propagational numb feeling at the points of the channel could be found. By linking up these points of specific feeling, an imaginary line which is exactly the classical Large Intestine or Stomach channel can be traced out. This line is called the "latent propagational sensation line along the channels" because, unless through tapping, no prominent sensation of propagation could be felt. Employing an impulsive electrical generator and an all-wave commutating circuit linked to a micro-ammeter, the skin conductance was measured over the latent PSC of the Large Intestine channel lying between the wrist and 5 cm above the elbow joint. Results were compared to those locations of 1 cm apart from the channel course, i.e. the control sites devoid of acupuncture points or channels. At most acupuncture points or any site of the channel course on all of the 10 subjects under examination, there was greater electrical conductance maxima than there was at control sites. This fact indicates that not only the acupuncture points, but the entire course of latent PSC are also of higher electrical conductance.

Acupuncture Therapy↗