RP incidence is determined of the splitting the number of teenagers with RP together with amount of teenagers just who experienced one maternity (and those currently expecting) multiplied by 100. RB incidence additionally is calculated because of the dividing the fresh new level of teens having RB together with quantity of teens just who experienced one livebirth increased from the 100. Deformalized survey loads have been used if you’re calculating new prevalence.
We utilized the ptrendi plan inside the Stata13 to execute Cochran–Armitage assessment to choose the incidence trend for each and every age group using the fresh chi-rectangular statistic and you can fulfilling the brand new presumptions off an ingredient model. Cochran–Armitage take to is actually an altered Pearson’s chi-square try which analyzes the brand new relationship anywhere between binary (i.e. RP and you may RB) and you may ordinal (we.age. 12 months and you may years) groups. Multivariate logistic regression investigation which have telecommunications consequences to possess ages (i.age. a long time playing with each other around three and you will four classes) and you may 12 months try conducted when using frequent maternity and you will birth since the binary lead variables (i.e. yes or no). We counted this new development ranging from a few successive survey ages to spot and that periods had tall alterations in frequency. At exactly the same time, i reviewed styles using year and you can socio-geographical (we.elizabeth. area, form of house, and riches list) telecommunications for each age group. For the purpose of it analysis, we utilized the three category age bracket since this try this new only categorization and therefore greeting an acceptable number of instances.
Performance
Among women aged fifteen–24 age having one pregnancy (letter = 7091), a large proportion (53.3%) have been discovered among twenty-two–24 seasons olds. Despite the short proportion of teenagers grabbed from the studies, new ratio off 15–18 12 months olds advertised on the survey has increased through the years away from eight.64% (n = 107) in the 1993 so you can % (n = 213) inside the 2013 (get a Г–zbekistan gГјzel genГ§ bayan hold of Dining table step 1).
Pattern analysis per age group
Prevalence styles regarding teenagers having regular pregnancy throughout the Philippines out of 1993 so you’re able to 2013 because of the age group. Caption: It figure merchandise the fresh new adjusted frequency out of frequent maternity having fun with ages groups having (a) about three and you can (b) four groups. Groups by using the about three groups are 15–18 yrs old, 19–twenty-one and you will 22–24 yrs . old while the four kinds along with fifteen–sixteen years old, 17–18 yrs old, 19–20 years dated, 21–22 yrs . old and you will 23–24 years of age, as the represented by the per range with the graphs. The newest x-axis is the questionnaire seasons set-up within the chronological purchase while the y-axis the latest weighted frequency
Prevalence trend from teens having constant beginning regarding the Philippines away from 1993 to 2013 from the age group. Caption: That it figure gift ideas this new weighted prevalence of constant beginning using decades teams with (a) around three and (b) four classes. Teams making use of the about three kinds include 15–18 years old, 19–twenty one and you will twenty two–24 yrs . old since five groups along with fifteen–sixteen years old, 17–18 years of age, 19–2 decades old, 21–twenty two years old and you can 23–24 yrs old, while the represented because of the per line with the graphs. New x-axis is the survey seasons setup for the chronological buy while the y-axis the brand new weighted frequency
Similar show was basically found in the regression investigation. The fresh new RP trend certainly fifteen–18 year olds stayed around unchanged round the all studies of 1993 in order to 2013 [Potential proportion (OR) =0.93; 95% Depend on interval (CI) =0.8step one–step 1.07]. There was a similar pattern out-of RB trend within this years category (Otherwise = 0.87; CI = 0.72–step 1.06) following an evident boost in frequency out-of 1993 so you can 1998 (Or = step three.29; CI = step one.25–8.62). While doing so, the newest earlier a long time exhibited a life threatening decline for both RP and you may RB which have unadjusted ORs between 0.83 to help you 0.87 (discover Table dos). Analyses playing with five years categories presented zero significant difference from the style prior to now demonstrated. Manner among fifteen–sixteen and 17–18 year-old adolescents stayed intact, while a lowering trend was visible for those aged 19–20, 21–twenty-two and 23–24.