RP prevalence try calculated by the splitting just how many teenagers that have RP as well as the quantity of teenagers whom knowledgeable one pregnancy (also people already expecting) multiplied because of the 100. RB prevalence on the other hand are calculated because of the breaking up this new number of adolescents which have RB in addition to number of adolescents exactly who knowledgeable at least one livebirth multiplied of the 100. Deformalized survey weights was basically used when you find yourself figuring the latest frequency.

We made use of the ptrendi package from inside the Stata13 to execute Cochran–Armitage evaluating to choose the frequency development each age group using the brand new chi-square fact and you will fulfilling the latest presumptions off an additive design. Cochran–Armitage test was a changed Pearson’s chi-rectangular sexy swedish women attempt which assesses the latest relationship anywhere between digital (we.e. RP and you can RB) and you will ordinal (i.elizabeth. year and you may ages) categories. Multivariate logistic regression investigation with interaction outcomes having many years (i.age. age range using both around three and five groups) and you will season try conducted when using regular maternity and you can birth because digital benefit details (i.age. yes if any). We mentioned the newest trend anywhere between a few straight survey many years to determine hence attacks got significant changes in prevalence. At the same time, i analyzed style using seasons and you may socio-geographic (we.e. region, brand of household, and you will wealth index) interaction each generation. For the true purpose of this study, i used the about three category age group since this was new simply categorization and that allowed an adequate number of instances.

Overall performance

Certainly women aged fifteen–24 years having a minumum of one maternity (n = 7091), a large proportion (53.3%) had been located among the many 22–24 year olds. Inspite of the quick ratio from teenagers caught by the surveys, this new ratio from 15–18 seasons olds stated in the questionnaire has increased through the years out-of seven.64% (n = 107) for the 1993 so you can % (letter = 213) in the 2013 (select Desk 1).

Pattern data for each and every generation

Prevalence styles out-of teenagers that have regular pregnancy regarding Philippines off 1993 in order to 2013 by age group. Caption: This profile gift ideas the newest adjusted prevalence out-of regular maternity having fun with decades groups with (a) around three and you can (b) four groups. Organizations utilizing the three kinds were 15–18 years old, 19–21 years old and twenty two–24 yrs . old while the five classes and additionally fifteen–sixteen yrs . old, 17–18 yrs old, 19–twenty years dated, 21–22 yrs old and you can 23–24 yrs . old, once the represented by the for every single range into graphs. The brand new x-axis ‘s the questionnaire 12 months set up when you look at the chronological acquisition since y-axis brand new weighted frequency

Prevalence styles out of adolescents which have repeated delivery in the Philippines out-of 1993 to help you 2013 from the age group. Caption: That it profile gift suggestions this new adjusted frequency out-of frequent delivery using ages teams having (a) about three and you will (b) four kinds. Organizations by using the three kinds is fifteen–18 yrs . old, 19–twenty-one and twenty-two–24 yrs old because four categories as well as fifteen–16 years old, 17–18 yrs . old, 19–20 years dated, 21–twenty-two years old and you can 23–24 years of age, given that portrayed by the for each and every line into the graphs. The latest x-axis is the questionnaire season install from inside the chronological acquisition due to the fact y-axis the weighted incidence

Comparable show were based in the regression investigation. The RP pattern certainly fifteen–18 seasons olds remained very nearly undamaged all over all of the studies off 1993 in order to 2013 [Opportunity proportion (OR) =0.93; 95% Rely on interval (CI) =0.8step 1–step 1.07]. You will find an identical pattern regarding RB development inside ages group (Otherwise = 0.87; CI = 0.72–step one.06) after the an apparent upsurge in frequency of 1993 to 1998 (Or = step three.29; CI = 1.25–8.62). On the other hand, the brand new old a long time presented a life threatening refuse both for RP and RB with unadjusted ORs anywhere between 0.83 to 0.87 (look for Dining table dos). Analyses playing with five decades classes displayed no significant difference regarding the styles in the past discussed. Fashion certainly 15–16 and 17–18 yr old adolescents stayed undamaged, while a reducing pattern are apparent for those old 19–20, 21–22 and you will 23–24.