RP frequency was computed because of the isolating what amount of adolescents which have RP as well as the amount of teenagers which experienced at least one maternity (including the individuals currently pregnant) multiplied by 100. RB prevalence likewise is actually calculated from the separating the fresh new level of teenagers that have RB in addition to level of adolescents who educated one or more livebirth multiplied because of the 100. Deformalized survey weights had been used if you are calculating the brand new frequency.
I used the ptrendi plan inside Stata13 to execute Cochran–Armitage testing to search for the frequency pattern for each generation playing with new chi-square fact and you can appointment the newest presumptions away from an ingredient design. Cochran–Armitage try is a changed Pearson's chi-rectangular decide to try and therefore assesses the latest relationship between digital (i.elizabeth. RP and you can RB) and you will ordinal (i.e. season and zoosk incelemeleri you may decades) classes. Multivariate logistic regression analysis having communication effects getting ages (i.age. a long time playing with both three and you may five kinds) and 12 months is actually conducted when using repeated pregnancy and you can birth given that binary benefit details (i.e. sure or no). We counted the latest trend anywhere between several successive questionnaire decades to understand hence symptoms had high changes in incidence. As well, i reviewed style using season and socio-geographic (we.age. area, sorts of quarters, and you will money directory) communication for each generation. With regards to which data, we made use of the around three classification age group as this is actually the latest just categorization and therefore anticipate an acceptable number of cases.