Pregnancy Complications/therapy; Pregnancy in Adolescence; Prenatal Care; Adolescent; Anemia/epidemiology; Birth Weight; Female; Humans; Infant Mortality; Labor Presentation; Parity; Pre-Eclampsia/epidemiology; Pregnancy; Risk; Saudi Arabia

Adolescent Pregnancy; Age Distribution; Age Factors; Anthropometry; Arab Countries; Asia; Bacterial And Fungal Diseases; Birth Weight; Body Weight; Control Groups; Delivery; Demographic Factors; Developing Countries; Diseases; Fertility; Hematological Effects; Incidence; Infant Mortality; Infections; Maternal Health Services; Measurement; Medicine; Mortality; Parity; Population; Population At Risk; Population Characteristics; Population Dynamics; Pregnancy Complications; Pregnancy Outcomes; Prenatal Care; Reproduction; Reproductive Behavior; Saudi Arabia; Western Asia