Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi
-
Zhonghua Liu Xing Bing Xue Za Zhi · Aug 1998
[Investigation of an Legionnaires' disease outbreak associated with contaminated air-conditioning].
An outbreak of upper respiratory infection (influenza-like syndrome) took place among the staff members of a large office building in Beijing, June, 1997. To understand the cause of the outbreak, with a case-control study with serological antibodies detection against serogroup 1 to 14 of Legionnaires' disease bacteria (LDB) and bacteriological test and culture on samples collected from the air-conditioning system of the office building was performed. The findings showed that the attack rates of tonsillitis and upper respiratory infection were 61.86% and 34.62% respectively. ⋯ Condensied water samples from an air-conditioning system showed that Legionella Pneumophila was positive. Evidence showed that it was an outbreak resulting from LDB serogroup 9 and 12, accompanied by upper respiratory infection related to air-conditioning system contaminated by LDB. This was the first report Lp infection associated with an air-conditioning system in China.
-
Zhonghua Liu Xing Bing Xue Za Zhi · Jun 1998
[A case-control study on risk factors of periodontitis].
A 1:1 matched case-control study was conducted to determine the risk factors of periodontitis for the government cadres in Wuhan city. Results showed that dental calculus, cigarette smoking and alcohol consumption were identified as risk factors of periodontitis with odds ratios 5.31, 2.13 and 1.86 respectively. ⋯ In the process of periodontitis, synergetic effect between cigarette smoking, alcohol drinking and dental calculus were noticed. In the general population, the proportions of periodontitis cases attributed to alcohol drinking, cigarette smoking and dental calculus were 25.12%, 24.04% and 46.29% respectively.
-
Zhonghua Liu Xing Bing Xue Za Zhi · Dec 1994
[A KABP (knowledge, attitude, belief and behavior) study about AIDS among taxi drivers and hotel attendants in Beijing].
This article reports the KABP study on 448 taxi drivers and 556 hotel attendants in Beijing for the first time in China. A self-administered questionnaire was used to investigate knowledge, attitude, belief and practice (KABP) about AIDS. In terms of knowledge, 23.8% of hotel attendants and 36.8% of taxi drivers did not know that contact with blood could transmit HIV. ⋯ Seventy-six point eight percent of taxi drivers and 79.8% of hotel attendants believed that they could change their behaviors in order to minimize the chances of getting HIV. This study indicates that HIV education is important in reducing the number of sexual partners and promoting the use of safe sex practices like condom use. Furthermore, as reported by the study population, education can change behavior.
-
Zhonghua Liu Xing Bing Xue Za Zhi · Aug 1994
[Epidemiologic study on the risk factors of postpartum hemorrhage].
The 1:2 matched case-control retrospective study of postpartum hemorrhage (PPH) was undertaken in Suizhou, Hubei Province from 1 January 1990 to 31 December 1991. The subjects consisted of 109 women who had a PPH (blood loss equal to or more than 500 ml) and 218 women whose blood loss at delivery was less than 200 ml. The results showed that multiparity, age younger than 20 or older than 36, long second and third stages of labour, abortion, low income, lack of obstetric care, etc, were identified as risk factors statistically.
-
Zhonghua Liu Xing Bing Xue Za Zhi · Dec 1992
[A case-control study on risk factors of cerebral hemorrhage].
A case-control study to investigate the risk factors of cerebral hemorrhage was conducted in 162 hospitalized patients diagnosed by head CT scan in Tianjin, 1988-89. Each patient was matched at the same time by one hospital control and one community control. Multivariable conditional logistic regression analysis showed that history of hypertension or TIA, stroke history of parents and snoring were found to be the risk factors of cerebral hemorrhage, without involvement of smoking.