RP prevalence was determined from the splitting exactly how many adolescents having RP and the number of adolescents whom experienced at least one maternity (and those currently pregnant) increased by the 100. RB prevalence at exactly the same time are computed by separating the fresh quantity of adolescents that have RB in addition to quantity of teens who knowledgeable one livebirth multiplied from the 100. Deformalized survey weights was basically applied if you find yourself figuring this new frequency.

I utilized the ptrendi package when you look at the Stata13 hot german women to execute Cochran–Armitage assessment to select the frequency trend for each age group having fun with new chi-square fact and appointment the fresh new assumptions of an additive design. Cochran–Armitage sample is actually a modified Pearson’s chi-rectangular sample which analyzes the association between binary (i.e. RP and you will RB) and ordinal (i.e. 12 months and you can many years) kinds. Multivariate logistic regression research which have interaction outcomes getting decades (we.elizabeth. age range playing with each other around three and you can four kinds) and seasons is presented while using regular maternity and you can birth since digital outcome details (i.e. sure or no). We mentioned the fresh development between a few straight survey ages to spot hence symptoms had extreme alterations in incidence. At the same time, we examined manner having fun with year and you may socio-geographic (i.e. region, type of home, and wealth directory) communication per age group. For the purpose of that it data, i made use of the around three group age group that was the latest just categorization and this anticipate an adequate number of instances.

Abilities

Certainly feminine old fifteen–24 many years that have one or more pregnancy (n = 7091), a large proportion (53.3%) have been located one of several 22–24 12 months olds. Inspite of the short proportion regarding adolescents grabbed by the studies, new proportion off 15–18 season olds claimed on questionnaire has grown over the years from eight.64% (letter = 107) in 1993 so you can % (letter = 213) in the 2013 (come across Dining table step 1).

Trend investigation per age group

Incidence manner of adolescents that have constant maternity regarding the Philippines out-of 1993 so you’re able to 2013 because of the generation. Caption: Which figure gift suggestions the newest adjusted frequency regarding repeated pregnancy using age groups that have (a) about three and (b) four classes. Communities utilizing the around three groups are fifteen–18 yrs old, 19–twenty-one and you will twenty two–24 years old because four categories together with 15–16 years old, 17–18 years of age, 19–twenty years old, 21–twenty-two yrs old and you will 23–24 yrs . old, since illustrated because of the for each and every line for the graphs. Brand new x-axis is the survey year setup into the chronological acquisition since y-axis the newest weighted frequency

Prevalence style regarding teenagers which have repeated beginning on Philippines off 1993 so you’re able to 2013 from the age group. Caption: This shape gift suggestions brand new adjusted frequency off frequent birth playing with age groups with (a) three and (b) five classes. Communities making use of the about three kinds are 15–18 years of age, 19–twenty-one and you will twenty two–24 yrs . old once the four classes along with 15–16 years old, 17–18 yrs . old, 19–twenty years old, 21–22 yrs . old and you may 23–24 years old, since the illustrated from the for every single range into the graphs. Brand new x-axis ‘s the questionnaire season establish during the chronological buy just like the y-axis new adjusted prevalence

Comparable overall performance was basically found in the regression study. This new RP pattern among 15–18 seasons olds remained practically unchanged around the every surveys off 1993 in order to 2013 [Odds proportion (OR) =0.93; 95% Trust period (CI) =0.81–1.07]. There can be a comparable development out of RB development contained in this years category (Otherwise = 0.87; CI = 0.72–step one.06) adopting the an evident upsurge in incidence out-of 1993 to 1998 (Otherwise = step 3.29; CI = 1.25–8.62). On the other hand, the elderly age range demonstrated a significant decline both for RP and you can RB that have unadjusted ORs ranging from 0.83 so you can 0.87 (pick Dining table 2). Analyses having fun with four age groups presented no factor about trends in the past described. Style among fifteen–sixteen and you can 17–18 year-old adolescents stayed intact, whereas a lowering pattern is apparent for those aged 19–20, 21–twenty two and 23–24.