RP frequency is actually calculated of the splitting the amount of teens that have RP and quantity of teenagers which educated at least one maternity (and those individuals currently pregnant) increased by 100. RB frequency at exactly the same time are calculated by separating brand new number of teens having RB while the amount of adolescents which knowledgeable one livebirth increased by 100. Deformalized survey loads were applied while you are calculating the new frequency.

I made use of the ptrendi bundle when you look at the Stata13 to perform Cochran–Armitage tests to search for the frequency development for each and every age group using the chi-rectangular fact and you will appointment the new presumptions of an additive design. Cochran–Armitage test is actually an altered Pearson’s chi-square shot and that analyzes the latest connection anywhere between digital (i.age. RP and you will RB) and you can ordinal (we.age. year and you may ages) classes. Multivariate logistic regression data which have telecommunications outcomes for age (we.elizabeth. age range using one another about three and five groups) and you will year was presented while using regular maternity and you will delivery due to the fact digital lead parameters (we.elizabeth. sure if any). We mentioned the fresh new development ranging from a couple straight questionnaire decades to identify which attacks had high alterations in prevalence. Likewise, we examined manner using season and you can socio-geographic (we.age. region, style of residence, and you may wide range directory) communication per age group. For the purpose of which investigation, we used the around three classification generation since this try the brand new merely categorization and this anticipate an adequate number of cases.

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Certainly feminine aged 15–24 ages which have at least one maternity (letter = 7091), the great majority (53.3%) was basically located one of the twenty-two–24 year olds. In spite of the quick proportion away from teenagers captured from the studies, the fresh new proportion regarding fifteen–18 season olds stated throughout the survey has increased over the years out of eight.64% (letter = 107) during the 1993 to % (n = 213) during the 2013 (discover Dining table step 1).

Pattern data for every single age group

Incidence trends of teens which have frequent maternity about Philippines of 1993 in order to 2013 from the age bracket. Caption: This figure gift ideas the fresh weighted prevalence off repeated pregnancy having fun with ages organizations which have (a) about three and (b) five categories. Groups with the around three categories were fifteen–18 yrs . old, 19–twenty-one and twenty two–24 years old as the five groups also fifteen–16 years of age, 17–18 yrs . old, 19–two decades dated, 21–twenty two years of age and you will 23–24 yrs old, since the portrayed because of the for each range towards the graphs. The brand new x-axis is the survey 12 months create when you look at the chronological purchase due to the fact y-axis brand new adjusted frequency

Prevalence fashion of teens having frequent beginning on Philippines from 1993 so you’re able to 2013 by the age group. Caption: This shape gifts the fresh weighted prevalence from regular delivery having fun with many years communities which have (a) around three and you can (b) four kinds. Groups utilising the three categories include fifteen–18 years old, 19–twenty-one and twenty-two–24 years of age as five groups as well as 15–sixteen yrs . old, 17–18 years of age, 19–twenty years old, 21–twenty-two years of age and you may 23–24 years old, as illustrated by per line with the graphs. The new x-axis is the survey year set up inside the chronological buy just like the y-axis the new adjusted frequency

Equivalent abilities was indeed based in the regression study. The new RP trend certainly fifteen–18 season olds stayed nearly intact round the the surveys regarding 1993 to 2013 [Opportunity ratio (OR) =0.93; 95% Trust interval (CI) =0.81–step one.07]. There can be a comparable trend out of RB development within this age class (Or = 0.87; CI = 0 sexy scandinavian women.72–step 1.06) adopting the a noticeable escalation in frequency away from 1993 in order to 1998 (Otherwise = 3.29; CI = 1.25–8.62). At the same time, the fresh more mature age groups presented a critical refuse both for RP and you may RB having unadjusted ORs between 0.83 to help you 0.87 (come across Dining table 2). Analyses playing with four age categories displayed no factor regarding the trends before discussed. Trend certainly one of 15–sixteen and you may 17–18 year-old teenagers stayed unchanged, whereas a lowering trend try obvious for those old 19–20, 21–twenty two and you may 23–24.