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In spite of the rapid fertility transition experienced by most LAC countries, teenage fertility has not changed at the same pace or direction. Given early childbearing is deleterious for both mother and child, we describe the differentials in the levels and trends in teenage childbearing and analyze its proximate and socioeconomic determinants. We used DHS data from six LAC countries, Bolivia, Brazil, Colombia, Guatemala, Dominican Republic and Peru, for which there is available data for the second half of the 90's. Teenage fertility trends indicate different patterns of change across countries by area of residence. However, in most countries teenage fertility has increased in rural areas but has declined or remained constant in urban areas. Different contributions of marriage, proper use of family planning methods, and premarital births to teenage fertility behavior are reflected in differentials in unmarried parenthood across countries. Socioeconomic determinants are analyzed through: simple logit model, multilevel analysis, and continuous-time hazard rate models. These analyzes improve on prior research on LAC countries by: including contextual/regional factors, by isolating the effects into differentials in sexual activity and rates of childbearing, and by comparing the socioeconomic determinants of the timing of first birth and premarital birth. This research demonstrates that the effect of socioeconomic variables on the rate of childbearing can act through the timing of initial sexual intercourse (such as education, socioeconomic conditions of the households and area or residence) or through the timing of first birth (such as socialization in a female-headed family, availability/acceptability/use of family planning, and regional/country conditionscultural and inherent characteristics).

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Fundación para la Educación Superior y el Desarrollo, Bogotá, Colombia r e s u m e n Este artículo presenta un instrumento de investigación cualitativa denominado econograma y tiene su origen en la necesidad generar un conocimiento de base para evaluar la eficacia de los programas estatales implementados en la atención de población damnificada por un fenómeno de excesiva pluviosidad, sucedido en Colombia entre noviembre de 2010 y marzo de 2011. Esta herramienta de investigación es a la vez un formato y una técnica, que pone en evidencia la estructura básica de las interacciones que se establecen entre un individuo o un colectivo en términos económicos, y permite rastrear desplazamientos en los comportamientos económicos a través del tiempo, desde una perspectiva que permite inferir ciclos de producción y de consumo, tendencias y redes de producción.Palabras clave investigación cualitativa; instrumentos de investigación; investigación social; econometría; línea de base; metodología de investigación a B s t r a c t This paper presents a qualitative research tool called Econogram. This instrument has its origin in the need to generate new knowledge to evaluate the effectiveness of the state programs, implemented to attend the population affected by a phenomenon of excessive rainfall in Colombia between November 2010 and March 2011. This research tool is both a format and a technique, which proves the structure of the interactions between an individual, or a group in economic terms. It also allows tracking and understanding shifts in economic behavior throughout time to infer cycles of production, consumption and production networks and trends.