Retrospective study to assess the effect of epidural analgesia on labor progress and women's pelvic floor muscle from the perspective of electromyography.

Objective: Epidural analgesia has been widely used as a form of pain relief during labor and its safety has been gradually recognized. However, few studies of the effect of epidural analgesia on the pelvic floor are known. Thus, we aim to analyze the effect of epidural analgesia on labor progress and women's pelvic floor muscle from the perspective of electromyography systematically.

Application of a randomized response technique for the sensitive question survey in female sex workers in Xichang, China.

Background: The technique of sampling is a particularly important aspect of sampling surveys, and the method of determining sample size is the key link in sampling technique. However, a sample size determination method for complex sampling surveys of sensitive issues using a randomized response model is not yet available.

Methods: In this work, we drew from the theory of probability and mathematical statistics, and developed a series of formulas for sample size determination that are required to estimate the overall proportion and mean on dichotomous sensitive questions in 3-stage sampling using Simmons models.

Estimation of Sensitive Proportion by Randomized Response Data in Successive Sampling.

This paper considers the problem of estimation for binomial proportions of sensitive or stigmatizing attributes in the population of interest. Randomized response techniques are suggested for protecting the privacy of respondents and reducing the response bias while eliciting information on sensitive attributes. In many sensitive question surveys, the same population is often sampled repeatedly on each occasion.

The Randomized Response Technique Application in the Survey of Homosexual Commercial Sex among Men in Beijing.

Background: Traditional survey methods may cause refusals to respond or untruthful replies when encounter the sensitive questions. The Randomized Response Technique (RRT) is designed to decrease social desirability bias and obtain reliable estimates. This study aimed to apply these new methods on the sensitive questions survey.

[Relationship of iron overload to bone mass density and bone turnover in postmenopausal women with fragility fractures of the hip].

Objective: To study relationships between serum ferritin and bone metabolism in patients with hip fragility fractures.

Methods: This cross-sectional study included 76 postmenopausal women with hip fracture from Feburary 2011 to June 2012. The mean age of the women was (73 ± 10) years (range, 55-93 years) and the mean duration of menstruation was (22 ± 10)years (range, 5-50 years).

The effect of combined exposure of 900 MHz radiofrequency fields and doxorubicin in HL-60 cells.

Human promyelocytic leukemia HL-60 cells were pre-exposed to non-ionizing 900 MHz radiofrequency fields (RF) at 12 µW/cm(2) power density for 1 hour/day for 3 days and then treated with a chemotherapeutic drug, doxorubicin (DOX, 0.125 mg/L). Several end-points related to toxicity, viz.

Induction of adaptive response: pre-exposure of mice to 900 MHz radiofrequency fields reduces hematopoietic damage caused by subsequent exposure to ionising radiation.

Purpose: To investigate whether an adaptive response can be induced in mice which were pre-exposed to 900 MHz radiofrequency fields.

Materials And Methods: Adult male Kunming mice were exposed to 900 MHz radiofrequency fields (RF) at power intensities of 12, 120 and 1200 μW/cm(2) for 1 h/day for 14 days and then subjected to whole body gamma-irradiation. The results were compared with those in unexposed control animals and those exposed to gamma-irradiation alone (without pre-exposure to RF).

Effects of 900-MHz microwave radiation on gamma-ray-induced damage to mouse hematopoietic system.

Exposure of humans simultaneously to microwave and gamma-ray irradiation may be a commonly encountered phenomenon. In a previous study data showed that low-dose microwave radiation increased the survival rate of mice irradiated with 8Gy gamma-ray; however, the mechanisms underlying these findings remain unclear. Consequently, studies were undertaken to examine the effects of microwave exposure on hematopoietic system adversely altered by gamma-ray irradiation in mice.

[Antagonistic effect of microwave on hematopoietic damage of mice induced by gamma-ray irradiation].

Objective: To investigate antagonistic effect of microwave on hematopoietic damage of mice induced by gamma-ray irradiation.

Methods: Male healthy Kunning mice were treated with low dose microwave radiation before exposure to (60)Co gamma-ray irradiation of 8.0 Gy.

[Radiation protection and possible mechanisms for low intensity microwave].

Objective: To investigate radiation protection and possible mechanisms of low intensity microwave on gamma-ray exposed mice.

Methods: 96 healthy Kunming mice were randomly divided into the following four groups: normal control, microwave (120 microW/cm(2), 900 MHz), gamma-ray irradiation (5 Gy), combined exposure of microwave and gamma-ray (120 microW/cm(2) + 5 Gy). The microwave group and combined group were exposed to 120 microW/cm(2) microwave firstly, 1 h/d, for 14 days.