{"id":2631,"date":"2019-05-27T00:35:10","date_gmt":"2019-05-27T04:35:10","guid":{"rendered":"https:\/\/natural-womanhood.local\/?p=2631"},"modified":"2026-04-16T09:16:41","modified_gmt":"2026-04-16T14:16:41","slug":"el-cdc-cambia-la-calificacion-de-eficacia-de-los-metodos-de-conocimiento-de-la-fertilidad-2019","status":"publish","type":"post","link":"https:\/\/naturalwomanhood.org\/es\/cdc-changes-effectiveness-rating-on-fertility-awareness-methods-2019\/","title":{"rendered":"Los CDC cambian la clasificaci\u00f3n de eficacia de los m\u00e9todos de conocimiento de la fertilidad"},"content":{"rendered":"

Hasta hace poco, los Centros para el Control y la Prevenci\u00f3n de Enfermedades (CDC) informaban de que la tasa de fracaso de los m\u00e9todos basados en el conocimiento de la fertilidad para evitar el embarazo era del 24%, lo que disuadir\u00eda a la mayor\u00eda de las parejas de utilizarlos e impedir\u00eda a los m\u00e9dicos recomendarlos. A principios de este a\u00f1o cambi\u00f3 esta tarifa publicada a \"2% a 23%\"<\/a>\u00a0lo que supone un gran cambio para el sector.<\/p>\n

\u00bfQu\u00e9 significa esto para las mujeres y las parejas y para quienes hablan de estos m\u00e9todos? \u00bfQu\u00e9 debemos hacer ahora para seguir garantizando el reconocimiento de estos m\u00e9todos?<\/p>\n

El cambio<\/h2>\n

Anteriormente, los CDC publicaron la cifra de una tasa de fracaso de 24% bas\u00e1ndose en un estudio de 2011 que citaba una tasa \u00fanica para todos los m\u00e9todos basada en dos encuestas de 1995 y 2002. En las encuestas, se pidi\u00f3 a las mujeres que recordaran qu\u00e9 m\u00e9todo utilizaban cuando intentaban evitar un embarazo. Los m\u00e9todos m\u00e1s antiguos y de baja tecnolog\u00eda se pusieron en la misma cesta que los m\u00e9todos modernos estandarizados y probados, como el m\u00e9todo sintot\u00e9rmico y el m\u00e9todo de la ovulaci\u00f3n. De hecho, 86% de las que el estudio identific\u00f3 como usuarias de m\u00e9todos de conocimiento de la fertilidad declararon que utilizaban el m\u00e9todo del ritmo del calendario -un m\u00e9todo mucho m\u00e1s antiguo y menos probado, desarrollado en la d\u00e9cada de 1930- como principal forma de anticoncepci\u00f3n (1).<\/p>\n

El a\u00f1o pasado,\u00a0lanzamos una petici\u00f3n<\/a> para invitar a los CDC a revisar su calificaci\u00f3n sobre los m\u00e9todos basados en el conocimiento de la fertilidad. Recogimos m\u00e1s de 14.000 firmas (8.000 en nuestra primera campa\u00f1a y m\u00e1s de 6.000 en la segunda). Nunca enviamos la petici\u00f3n a los CDC porque esper\u00e1bamos llegar primero a las 20.000 firmas. Pero puede que sirviera para enviar un mensaje a los dirigentes de esta organizaci\u00f3n de alto nivel.<\/p>\n

Un nuevo estudio<\/a> que ahora se cita en el informe de los CDC. Este nuevo estudio revis\u00f3 53 estudios previos que med\u00edan las tasas de embarazo de las mujeres que utilizaban FABM y clasific\u00f3 los estudios bas\u00e1ndose en una serie de normas de calidad. Algunos de estos est\u00e1ndares son similares o id\u00e9nticos a los utilizados en el estudio de investigaci\u00f3n de la organizaci\u00f3n FACTS publicado en 2013<\/a>. En este estudio, los investigadores encontraron al menos un estudio de alta calidad para cada m\u00e9todo, con tasas de embarazos no deseados que oscilaban entre tan solo 2 y 141 TP3T. En general, estas revisiones convencieron a los CDC de que hab\u00eda pruebas suficientes de que no todos los m\u00e9todos anticonceptivos de barrera eran iguales.<\/p>\n

De hecho, era injusto no s\u00f3lo para los m\u00e9todos, sino tambi\u00e9n para las mujeres y las parejas, dar la impresi\u00f3n de que los FABM son, en general, ineficaces para evitar el embarazo, sin analizar cada uno de ellos m\u00e1s detenidamente.<\/p>\n

Estos modernos m\u00e9todos de planificaci\u00f3n familiar natural, basados en la observaci\u00f3n diaria de los biomarcadores de la mujer, no tienen efectos secundarios, ayudan a la mujer a conocer y comprender mejor su propia fertilidad y favorecen el acercamiento y la comunicaci\u00f3n en la pareja.<\/p>\n

Qu\u00e9 significa<\/h2>\n

El cambio puede parecer sutil. Al fin y al cabo, de 2% a 23% es un rango muy amplio. Pero recuerde que, como la autoridad m\u00e1s influyente en todos los asuntos de salud en Estados Unidos, el CDC tiene un impacto de gran alcance. La inexacta tasa de fracaso de 24% fue citada por todos los medios de comunicaci\u00f3n cada vez que informaban sobre los m\u00e9todos basados en el conocimiento de la fertilidad o sobre las aplicaciones cada vez m\u00e1s populares que los utilizan. Probablemente era la misma referencia que utilizaban los m\u00e9dicos para disuadir a muchas mujeres de pensar siquiera en m\u00e9todos naturales de planificaci\u00f3n familiar si esperaban posponer un embarazo.<\/p>\n

Pero dada la informaci\u00f3n actualizada de los CDC, ahora es oficialmente inexacto decir simplemente que todos los FABM son ineficaces. En palabras de los CDC: \"Las tasas de fracaso var\u00edan seg\u00fan el m\u00e9todo. Rango de tasas de fracaso de uso t\u00edpico: 2-23%\". En otras palabras, algunos m\u00e9todos son muy eficaces. Los CDC crearon categor\u00edas en su gr\u00e1fico<\/a> que presenta los \u00edndices de eficacia de todos los m\u00e9todos anticonceptivos, y un \u00edndice t\u00edpico de 2% sit\u00faa algunos de los FABM entre la categor\u00eda de nivel 1 (menos de 1%, como los DIU o los implantes) y la categor\u00eda de nivel 2 (de 4 a 7%, como la p\u00edldora, el parche, el anillo). Esta nueva clasificaci\u00f3n obliga a los medios de comunicaci\u00f3n y a los m\u00e9dicos a considerar los m\u00e9todos modernos de forma diferente y a informar con precisi\u00f3n.<\/p>\n

\"Natural<\/a>
Sugerencia de edici\u00f3n del gr\u00e1fico de los CDC.<\/figcaption><\/figure>\n

Qu\u00e9 debemos hacer<\/h2>\n

En primer lugar, queremos celebrar este cambio. Es un gran paso hacia el progreso y la disponibilidad de los m\u00e9todos basados en el conocimiento de la fertilidad para las mujeres.<\/p>\n

Tambi\u00e9n queremos asegurarnos de que el cambio se note y se entienda. Para ello, escribimos un ejemplo de carta<\/a> que puede utilizar para enviar a su propio m\u00e9dico o a los medios de comunicaci\u00f3n locales. Si\u00e9ntete libre de personalizarlo con tus propias palabras y experiencia o simplemente de enviarlo tal cual en nuestro nombre (si lo personalizas y firmas, por favor retira el logo de Natural Womanhood).<\/p>\n

No creemos que el cambio del CDC sea completo. Por un lado, los CDC gr\u00e1fico<\/a>que es lo primero que aparece en Google y lo que consulta la mayor\u00eda de la gente, sigue sin distinguir entre los m\u00e9todos basados en el conocimiento de la fertilidad con diferentes \u00edndices de eficacia. Ser\u00eda m\u00e1s preciso mover el term\u00f3metro y el gr\u00e1fico de moco juntos a la categor\u00eda de Nivel 2 que mantenerlo en la categor\u00eda de Nivel 3 donde actualmente aparece junto a opciones como el \"m\u00e9todo de retirada\". Tambi\u00e9n ser\u00eda m\u00e1s \u00fatil mencionar m\u00e9todos espec\u00edficos.<\/p>\n

Por \u00faltimo, en su breve relato sobre los m\u00e9todos, explican que \"tienes unos nueve d\u00edas f\u00e9rtiles cada mes\". Esto puede ser enga\u00f1oso para las parejas que intentan conseguir un embarazo, ya que la ventana fisiol\u00f3gica real de fertilidad s\u00f3lo dura 6 d\u00edas cada ciclo, pero para las parejas que intentan prevenir<\/em> embarazo el periodo medio que necesitan para evitar las relaciones sexuales es de 9-11 d\u00edas.<\/p>\n

Esperamos que el CDC tenga en cuenta estos cambios. Nuestro plan es escribir a los CDC en las pr\u00f3ximas semanas para compartir los resultados de la petici\u00f3n y solicitar estas actualizaciones f\u00e1cticas.<\/p>\n

Algunos cambios se producen porque as\u00ed lo deciden las autoridades gobernantes, pero la mayor\u00eda tienen lugar porque tienen sentido para los hombres y mujeres de la calle. Creemos que, con una concienciaci\u00f3n y educaci\u00f3n continuas, la gente seguir\u00e1 viendo las ventajas de utilizar m\u00e9todos basados en el conocimiento de la fertilidad en lugar de f\u00e1rmacos anticonceptivos con muchos efectos secundarios. Todos debemos contribuir a que se produzca este cambio. Le animamos a que corra la voz y utilice nuestro formulario<\/a> para compartir la noticia.<\/p>\n

Referencias<\/em><\/p>\n

1.Duane Marguerite, R. Motley y M. Manhart.<\/span><\/span>\u00a0<\/span><\/span>\"Cartas al director:\u00a0<\/span><\/span>Los m\u00e9dicos necesitan m\u00e1s\u00a0<\/span><\/span>Educaci\u00f3n sobre planificaci\u00f3n familiar natural\".\u00a0<\/span><\/span>M\u00e9dico de familia estadounidense<\/span><\/span>\u00a088, no. 3 (agosto de 2013): 158-159.\u00a0https:\/\/www.aafp.org\/afp\/2013\/0801\/p158.html<\/a>.<\/span><\/span><\/p>\n

2. Peragallo Urrutia R, Polis CB, Jensen ET, Greene ME, Kennedy E, Stanford JB. Efectividad de los m\u00e9todos basados en el conocimiento de la fertilidad para la prevenci\u00f3n del embarazo: Una revisi\u00f3n sistem\u00e1tica<\/a>. Obstet Gynecol 2018;132:591-604.<\/p>","protected":false},"excerpt":{"rendered":"Hasta hace poco, los Centros para el Control y la Prevenci\u00f3n de Enfermedades (CDC) informaban de que la tasa de fracaso de los...","protected":false},"author":2,"featured_media":2636,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","csco_singular_sidebar":"","csco_page_header_type":"","csco_page_load_nextpost":"","csco_post_video_location":[],"csco_post_video_url":"","csco_post_video_bg_start_time":0,"csco_post_video_bg_end_time":0,"footnotes":""},"categories":[5282,5179],"tags":[55,58],"class_list":{"0":"post-2631","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-avoiding-pregnancy","8":"category-fertility-awareness-methods","9":"tag-effectiveness-rates","10":"tag-natural-family-planning","11":"cs-entry","12":"cs-video-wrap"},"acf":[],"yoast_head":"\nCDC Changes Effectiveness Rating on Fertility Awareness Methods - 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