Objetivo. Estimar la prevalencia de ansiedad generalizada (GAD, por sus siglas en inglés) entre abril y junio de 2020. Material y métodos. Diseño transversal repetido basado en la Encovid-19, una serie de encuestas telefónicas mensuales con muestras representativas de México (N= 833-1 674). El cuestionario incluye la escala GAD-2 y en julio se añadió la GAD-7; se examinó su validez interna con análisis factorial confirmatorio y su validez concurrente con variables sociodemográficas. Con la GAD-7 como criterio, se calculó la validez predictiva de la GAD-2. Se estimó la prevalencia mensual con la GAD-2. Resultados. La GAD-7 y la GAD- 2 son confiables y válidas. La GAD-2 tiene una sensibilidad de 0.87 y una especificidad de 0.90. La prevalencia mensual se mantuvo alta y estable, entre 30.7 y 32.6%. El GAD se concentró en mujeres, personas desocupadas y de bajo nivel socioeconómico. Conclusiones. El GAD es un problema de salud pública que se agravó con la pandemia por Covid-19.
In this study, we explore how to use household expenditures and income surveys (HEIS) to provide replicable and comparable measures of nutrients availability at the population level. Our method formalizes the common practice in the literature and consists of three steps: identification of relevant food categories, pairing of food contents food groups in HEIS data, and calculation of the typical amount of nutrients by food group. We illustrate the usage of the method with Mexican data and provide a publicly available data set to readily convert food purchases into six nutrients: calories, proteins, vitamins A and C, iron, and zinc. We perform a descriptive analysis of the evolution of nutrients intake among Mexican households between 2008 and 2020, considering differences by income level. Our results reflect the effect of the COVID-19 pandemic on nutrient availability in Mexican households, mainly driven by a substantial reduction in the expenditure in food consumed away from home, although for most nutrients the trend was stable over most of the period.
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