The objective of this article is to determine through meta-analysis of published literature whether active management of labor lowers the cesarean delivery rate for dystocia in nulliparas. Using MEDLINE and reference citations to 1966, 18 published reports in English on active management of labor were identified. Selection criteria for five selected studies included: tenets of active management...

The Nation's spending for health in fiscal year 1976 reached $139.3 billion, or $638 per person, according to preliminary figures. This total was 14 percent higher than the $122.2 billion spent for health in 1975. In the 2 years since price controls on the health industry were lifted, expenditures have risen $33.0 billion (31 percent). During this period, the economy has grown at a relatively s...

chemical oxidation is one of the most suitable treatment methods for reducing organic pollutants and the number of pathogens remaining in secondary effluents. ozone is the most powerful oxidizing agent commonly used because of it's many advantages over chlorination. in this study the efficiency of ozonation in advanced wastewater treatment of sahebgharanieh plant has been determined. ozone gene...

965 percent decrease in resistance in an airway in which the wall area was 45 percent. Since an increase in airway wall thickness is one of the pathogenetic mechanisms that leads to the decrease in maximal expiratory flow in patients who have COPD,2 it would be expected that those patients with more severe baseline airflow obstruction would have thicker airway walls. Thus, another explanation f...

Intralesional corticosteroid injections were performed in 31 hemangiomas in 30 infants aged 1 to 10 months at first injection. One to five injections were given, spaced 6 weeks apart. Lesions were located throughout the head and neck region, except one that was on the buttock. A mixture of betamethasone acetate and triamcinolone acetonide was used. Four lesions (13 percent) virtually disappeare...

organic compost can reduce various plant stresses, because of its porous structure, high water storage capacity, and existence of some substances resembling hormones and plant growth regulators. this study was performed to investigate interactions of different levels of vermicompost extract and salinity stress on morphological characteristics of bean seedlings. the experiment was conducted in c...

specifically shown. Table ;1 shows, for example, that 50 percent of the 163,429 former beneficiaries whose benefits terminated at age 18 were male. Table II indicates that one standard error is 2.3 percent. Thus, with 95 percent confidence the percentageof male beneficiaries in this group lies between 45.4 and 54.6. The following procedure may be used to make a rough determination of the statis...

Forty computer.simulated populations were analysed to derive fonnulae for estimating den.5ity of populations from a set of distances from sample points to the nearest member, from that member to its neighbour and from that neighbour to its nearest neighbour. Distances may be truncated or unlimited. The formulae were applied to data from 11 paper.dot and 18 field populations in a total of 37 exp...