RP incidence is actually computed of the isolating just how many teenagers having RP and also the amount of teens whom educated one maternity (and those people currently expecting) multiplied from the 100. RB prevalence concurrently was determined of the dividing the fresh number of adolescents which have RB plus the quantity of teenagers just who educated one livebirth increased because of the 100. Deformalized questionnaire weights was in fact applied if you are calculating the newest prevalence.

We used the ptrendi plan into the Stata13 to do Cochran–Armitage evaluating to determine the prevalence pattern for each generation having fun with the fresh chi-square statistic and you will fulfilling the presumptions of an additive model. Cochran–Armitage attempt is actually an altered Pearson’s chi-rectangular sample hence assesses new relationship anywhere between binary (we.e. RP and you can RB) and you may ordinal (we.age. 12 months and you will many years) kinds. Multivariate logistic regression investigation that have communication outcomes to own many years (i.elizabeth. age groups playing with both about three and you will four classes) and you can year is actually presented while using the repeated pregnancy and you may birth as binary consequences variables (i.age. yes if any). We measured brand new trend between a few consecutive questionnaire many years to identify and this periods had tall changes in prevalence. Concurrently, i assessed manner having fun with seasons and you can socio-geographic (i.age. region, kind of residence, and riches list) communications for every single age group. For the true purpose of that it investigation, we utilized the about three category age bracket because try this new just categorization and that greeting an acceptable number of cases.

Abilities

One of women aged fifteen–24 many years having one maternity (n = 7091), the great majority (53.3%) had been receive among the many twenty two–24 season olds. Inspite of the short ratio from teens seized by the studies, the fresh new proportion away from 15–18 season olds reported about survey has grown over time off 7.64% (n = 107) inside 1993 to help you % (letter = 213) in the 2013 (come across Table step one).

Pattern investigation for every single age bracket

Frequency trends of adolescents that have constant pregnancy in the Philippines regarding 1993 so you’re able to 2013 of the age bracket. Caption: That it figure gifts new weighted incidence away from repeated pregnancy having fun with many years groups with (a) around three and you can (b) four groups. Teams utilizing the about three kinds tend to be fifteen–18 yrs old, 19–21 years old and twenty-two–24 years old while the five classes plus 15–16 yrs old, 17–18 yrs old, 19–20 years old, 21–twenty two years of age and 23–24 yrs . old, as the depicted by for every line into graphs. The fresh new x-axis is the survey year create into the chronological acquisition given that y-axis this new weighted frequency

Frequency style out of teenagers with repeated beginning throughout the Philippines of 1993 so you’re able to 2013 from the age group. Caption: Which figure gifts the fresh adjusted prevalence regarding frequent birth having fun with age communities with (a) around three and you may (b) five classes. Teams making use of the three classes tend to be fifteen–18 years old, 19–twenty-one and you will twenty-two–24 years of age as the five categories including fifteen–16 years old, 17–18 yrs old, 19–twenty years dated, 21–twenty-two yrs old and 23–24 years of age, while the illustrated from the for every line towards the graphs. The brand new x-axis ‘s the questionnaire seasons establish into the chronological order due to the fact y-axis new weighted frequency

Equivalent abilities was based in the regression analysis. The fresh new RP trend one of 15–18 season olds stayed almost intact across the all of the studies from 1993 so you’re able to 2013 [Chances proportion (OR) =0.93; 95% Rely on interval (CI) =0.8step one–step 1.07]. There can be an identical trend off RB trend within decades group kissbrides.com websites (Or = 0.87; CI = 0.72–1.06) pursuing the a noticeable boost in frequency off 1993 to help you 1998 (Or = step 3.29; CI = 1.25–8.62). While doing so, the newest old a long time demonstrated a life threatening decline for RP and you may RB having unadjusted ORs between 0.83 so you’re able to 0.87 (pick Table dos). Analyses playing with five years groups showed zero significant difference in the styles before discussed. Style certainly one of fifteen–16 and you can 17–18 year old teenagers remained intact, while a reducing pattern are apparent for these old 19–20, 21–22 and 23–24.