We computed the fresh new mean, standard departure and you may frequency rates of RP and you will RB a-year each generation

RP incidence are calculated from the breaking up how many teenagers having RP and amount of teenagers exactly who experienced a minumum of one pregnancy (also the individuals already pregnant) multiplied by 100. RB incidence concurrently was computed from the isolating the amount of teenagers that have RB and the level of teenagers which experienced at least one livebirth increased from the 100. Deformalized survey weights was basically applied when you’re calculating new frequency.

I used the ptrendi package when you look at the Stata13 to execute Cochran–Armitage evaluation to select the prevalence trend for each and every age group having fun with the newest chi-square fact and meeting the assumptions away from an additive design. Cochran–Armitage test was an altered Pearson’s chi-square sample and therefore analyzes the fresh new relationship anywhere between binary (we.e. RP and you may RB) and ordinal (i.e. year and you may many years) groups. Multivariate logistic regression study with interaction consequences having ages (we.e. age groups playing with each other around three and you may four groups) and you will seasons is actually held while using constant pregnancy and you can birth since the digital result details (we.elizabeth. yes or no). We counted the new trend anywhere between one or two successive survey many years to recognize and this periods got significant changes in incidence. While doing so, i examined styles having fun with year and socio-geographical (we.e. area, brand of household, and money directory) communication per age group. With regards to which investigation, i used the around three category generation because this was the fresh merely categorization hence acceptance a sufficient number of instances.

Results

One of feminine aged fifteen–24 decades that have one or more maternity (letter = 7091), the great majority (53.3%) were receive among the many 22–24 seasons olds. Regardless of the small ratio from adolescents caught by the surveys, the newest ratio away from 15–18 year olds reported on the survey has grown over the years out-of 7.64% (letter = 107) inside the 1993 in order to % (letter = 213) in 2013 (get a hold of Desk step one).

Development research for each and every age group

Prevalence trend out-of teens that have repeated maternity throughout the Philippines from 1993 https://kissbrides.com/hot-cuban-women/ so you can 2013 by the age group. Caption: That it shape gift ideas the new adjusted prevalence off regular maternity playing with years groups that have (a) about three and you may (b) five groups. Organizations utilizing the about three classes include fifteen–18 yrs old, 19–twenty-one and you can twenty-two–24 yrs old as five groups together with 15–16 yrs . old, 17–18 yrs old, 19–twenty years dated, 21–22 yrs old and you will 23–24 years old, due to the fact illustrated because of the for every single range to the graphs. The fresh x-axis ‘s the questionnaire seasons created when you look at the chronological order because the y-axis the newest adjusted prevalence

Frequency styles out of teenagers having repeated delivery on the Philippines out-of 1993 to 2013 by the age bracket. Caption: That it profile gift suggestions the weighted prevalence regarding frequent birth playing with many years groups which have (a) three and you may (b) four categories. Groups making use of the about three groups are 15–18 yrs . old, 19–twenty one and you may 22–24 years old as four kinds including 15–16 years old, 17–18 years of age, 19–two decades dated, 21–twenty-two yrs . old and you will 23–24 yrs old, because the portrayed because of the each line to the graphs. The fresh x-axis is the survey season created in chronological buy as the y-axis the new weighted frequency

Equivalent overall performance was basically based in the regression investigation. The newest RP pattern certainly 15–18 season olds remained nearly intact across most of the studies out-of 1993 so you’re able to 2013 [Chance ratio (OR) =0.93; 95% Believe interval (CI) =0.81–1.07]. There clearly was an equivalent trend out of RB development within years class (Or = 0.87; CI = 0.72–step one.06) pursuing the an obvious escalation in prevalence regarding 1993 so you can 1998 (Otherwise = step 3.29; CI = 1.25–8.62). In addition, the brand new elderly a long time displayed a life threatening decline both for RP and you can RB having unadjusted ORs ranging from 0.83 to 0.87 (see Dining table 2). Analyses having fun with five years classes displayed zero significant difference throughout the trends in past times explained. Manner one of fifteen–16 and 17–18 yr old adolescents stayed intact, while a decreasing trend is visible for those old 19–20, 21–22 and you will 23–24.