ARTICLE IN PRESS r e v c o l o m b p s i q u i a t . 2 0 1 9; x x x(x x) :xxx–xxx www.elsevier.es/rcp Original article Relationship between the absence of adequate social support during pregnancy and low birth weight  Carol Viviana Paredes Mondragón * , Hoover Molano Dorado, Sandra Yamile Martínez Gómez, Roberth Alirio Ortiz Martínez, Stephany Arias Linthon, Andrés Camilo López Benavides Facultad Ciencias de la Salud, Universidad del Cauca, Popayán, Colombia a r t i c l e i n f o Article history: Received 21 July 2017 Accepted 6 November 2017 Available online xxx Keywords: Low birth weight Social support Psychosocial a b s t r a c t Introduction: Low birth weight is defined as the infant weighing less than 2500 g; its origins are multifactorial and its prevalence at the global and national levels is between 4.8% and 9% respectively. Lack of social support has been emphasised as one of the risk factors that may have a high correlation with the occurrence of low birth weight. Objective: To determine the relationship between the absence of social support during preg- nancy and low birth weight. Methods: Case–control study in a population of 420 selected mothers in a tertiary hospi- tal from November 2015 to July 2017. In these mothers, an instrument was applied that included sociodemographic variables and validated scales that evaluate social support and coping strategies. For the data analysis, logistic, psychological, biological and social regres- sion models were developed, with variables for a history of vaginosis, living in rural areas, nulliparity, and inadequate social support; which were identified as having the greatest relationship with low birth weight. Results: In the final logistic regression model we found that the absence of social support increases the chance of low birth weight by 3.59 fold (OR = 4.59; 95% CI, 2.27–9.27; p < 0.01). Another significant variable was nulliparity. Conclusions: The findings support the hypothesis that the absence of adequate social support during gestation is related to low birth weight. © 2017 Asociaci ´ on Colombiana de Psiquiatr´ ıa. Published by Elsevier Espa ˜ na, S.L.U. All rights reserved. DOI of original article: https://doi.org/10.1016/j.rcp.2017.11.002.  Please cite this article as: Paredes Mondragón CV, Molano Dorado H, Martínez Gómez SY, Ortiz Martínez RA, Arias Linthon S, López Benavides AC. Relación entre la ausencia de soporte social adecuado durante el embarazo y el bajo peso al nacer. Rev Colomb Psiquiat. 2019. https://doi.org/10.1016/j.rcp.2017.11.002 ∗ Corresponding author. E-mail address: cav san@hotmail.com (C.V. Paredes Mondragón). https://doi.org/10.1016/j.rcpeng.2017.11.002 2530-3120/© 2017 Asociaci ´ on Colombiana de Psiquiatr´ ıa. Published by Elsevier Espa ˜ na, S.L.U. All rights reserved. RCPENG-256; No. of Pages 9