Image corporelle et grossesse : examen des propriétés psychométriques de la traduction française de la Pregnancy and Weight Gain Attitude Scale (PWGAS)

Psychometric properties of the Scale of Attitudes towards Pregnancy and Weight Gain in Mexican population

“…Factor analysis confirmed five factors (negative attitude towards the increase of gestational weight, positive body image, control of gestational weight, concern about gestational weight, and restrictive behavior in response to gestational weight) through 18 items. The aforementioned dimensions explain 56% with adjustable indices, which is higher than the values in the model proposed by DiPietro et al (2003) and Rousseau et al (2016). RMSEA p = unilateral probability on the right hand for the null hypothesis that RMSEA will be ≤ .05; Δ χ 2 = difference between χ2 statistics of the two models compared; p of Δ χ 2 = unilateral probability on the right hand for the null hypothesis; ΔIFI = difference between IFI of the two models compared; ΔCFI = difference between CFIs of the two models compared.…”

“…Continuing with the description of the dimensions of this study, dimension four, called "concern about weight gain" includes three items, coinciding with the sphere of fear of weight gain in the model proposed by Rousseau et al (2016). This dimension coincides with the concern over appearance in pregnancy scale, given that one of the items asked whether women had restricted the amount of food they ate during pregnancy in order to feel thinner (Nagl, Jepsen, Linde, & Kersting, 2019).…”

“…Regarding dimension three, called "gestational weight control," which includes three items, two items coincide with the sphere of indifference towards weight gain in the model proposed by DiPietro et al (2003) and the item "I would like to gain between 10 and 13 kg during this pregnancy" was excluded in the analysis of the model designed by DiPietro et al (2003). However, this item was included in the sphere "lack of concern about weight gain" in the model proposed by Rousseau et al (2016). Weight control during pregnancy may be adequate or inappropriate, and will depend on the perception, attitudes, or dissatisfaction with the body image of the pregnant woman (Meireles et al, 2015b;Shloim et al, 2015).…”

“…In dimension five, called "restrictive behavior towards gestational weight," which includes two items, item four "I would like to put on between 5 and 9 kg during this pregnancy" was not contemplated in the analysis of the model proposed by DiPietro et al (2003), although it was included in the weight gain control sphere in the model proposed by Rousseau et al (2016). Item five, "as long as I eat a balanced diet, I am not worried about any weight I might gain during this pregnancy," was included in the dimension of indifference towards weight gain in the model proposed by DiPietro et al (2003) and in the dimension of fear over weight gain proposed by Rousseau et al (2016). These dimensions coincide with the behavioral component of the concept of body image, in other words, the actions people perform with the aim of checking, altering, or concealing their bodies (Cash & Smolak, 2011).…”

“…Scores range from 18 to 90 points, with higher scores indicating a more positive attitude to weight gain. The PWAS has shown psychometric properties and indices with acceptable internal reliability for the Spearman Brown coefficient with a value of .67 (Palmer et al, 1985), as well as in the North American population, with Cronbach's alpha from .75 to .84 (DiPietro et al, 2003) whereas in the French population, an alpha of .70 has been reported (Rousseau et al, 2016).…”