The incidence of spontaneous abortion

Abstract Published data are reviewed and it is concluded that about one fertilized ovum in three perishes before pregnancy is recognised. Of those surviving until pregnancy is recognized, one in four or five perish before term. So spontaneous loss accounts for about one fertilized ovum in two in a medically advanced society.     

Payment mechanisms for social work in health care: Today and tomorrow

Accepting the establishment of a national health policy as iminent, this paper surveys the way social work services are organized and financed within the health care system. It also outlines what measures can be taken to ensure the inclusion and importance of the profession within this system, and what developments can be expected in the next ten years.     

The self-image in the therapeutic dyad: A case example of mutual growth

The therapeutic relationship is seen as a mutual experiencing of self and other which is growth-promoting for the therapist as well as the patient. Work with a borderline woman during a period of two years evoked strong countertransference reactions in the therapist who, at times, experienced the patient as a mirror. A beginning sense of cohesion in the patient's highly fragmented sense of self found a parallel in this beginning therapist's developing professional identity.     

Jackknifing in Categorical Data Analysis

Estimation of nonlinear functions of a multinomial parameter vector is necessary in many categorical data problems. The first and second order jackknife are explored for the purpose of reduction of bias. The second order jackknife of a function g(.) of a multinomial parameter is shown to be asymptotically normal if all second order partials ?²g( p )?dp_i?p_j obey a Hölder condition with exponent α>1/2. Numerical results for the estimation of the log odds ratio in a 2times2 table demonstrate the efficiency of the jackknife method for reduction of mean-square-error and the construction of approximate confidence intervals.     

The participation of women in the labour force of Latin America: fertility and other factors

The level of labor force participation among Latin American women, when compared with participation rates for other countries, is the lowest in the world. Only 20% or less of women 10 years of age and older are economically active. This level did not change much between 1950 and 1970. Few women work in agriculture. The following factors are considered for their effect on labor force participation of urban women: marital status, education, income, and the structure and stage of development of the society. Married women have a low participation rate. More highly educated women are more likely to work, but there must be demand for their work services. As the economy of various countries has progressed, female participation in domestic services has decreased, in industry has remained constant between 1960 and 1970, and in social services has expanded. It is concluded that work participation for married women will only increase with the following changes: 1) improved educational opportunities for women; 2) structural change and modernization in the economy; and 3) reduced family fertility. Changes in the first 2 factors are more important than reduced fertility. Since 1960, only Chile and Costa Rica have had a 25% decline in fertility rates.