| Nili et al.(20)
|
To determine the frequency of pregnant adolescents and maternal and neonatal complications. |
Maternal complications: pre-eclampsia, PRM, UTI, and heart and thyroid disease. Neonatal complications: prematurity, LBW, delayed intrauterine growth, and mortality. |
| Markovitz et al.(21)
|
To investigate the relation between infant mortality, socioeconomic level, and maternal age. |
Child mortality, neonatal, and postnatal risks were significantly greater for younger adolescents. |
| Stewart et al.(22)
|
To determine the association between young maternal age and adverse outcomes. |
Maternal age was associated with increased risk of prematurity among the primiparous. |
| Kongnyuy et al.(23)
|
To determine the adverse fetal complications associated with pregnancy in adolescence. |
Fetal outcomes were LBW, prematurity and neonatal death. Maternal outcomes were eclampsia, pre-eclampsia, perineal laceration, and episiotomy. |
| Reime et al.(24)
|
To compare the risk of adverse outcomes in nulliparous adolescents and those who had an induced abortion or a previous delivery. |
Adolescents with a prior delivery presented with greater perinatal, neonatal, and mortality risks. Those with a prior abortion presented with elevated risks for stillborn, prematurity, and VLBW. |
| Santos et al.(25)
|
To analyze the association between pregnancy in adolescence with LBW. |
Among adolescents, LBW and prematurity were associated with low level of schooling, low number of prenatal visits, and late initiation of prenatal care. |
| Muganyizi et al.(26)
|
To establish the temporal changes in maternal age and its impacts for cesarean sections and LBW. |
The proportion of adolescent mothers diminished progressively over time (1999-2005). The risk of cesarean sections increased and the risk of LBW was reduced. |
| Santos et al.(27)
|
To analyze the association between maternal age, perinatal results, and route of delivery. |
Among the adolescents, a greater risk of prematurity, LBW, frequency of abortive method use, low number of prenatal visits, and late initiation of prenatal care were noted. |
| Khashan et al.(28)
|
To investigate the relation between the first and second pregnancies in adolescence and pre-term delivery, birth weight, and SGA. |
The risk of premature birth increased in the first and second pregnancies. There was some evidence of a protective effect against SGA during the adolescent first gestation. |
| Mukhopadhyay et al.(29)
|
To compare the perinatal differences between adolescent and adult primigestas. |
The adolescent mothers presented with greater proportion of premature deliveries, LBW, and stillborn. |
| Oliveira et al.(30)
|
To identify the effect of pregnancy on adolescence and risk factors for fetal and infant mortality. |
Low weight and prematurity were determining factors of fetal and neonatal death. The risk of postnatal death was higher in the presence of multiparity, maternal morbidity, and LBW. |
| Correia et al.(31)
|
To investigate abortion in adolescents. |
26.7% of the adolescents aborted primarily due to fear. |
| Lopoo(32)
|
To investigate the relation between adolescent pregnancy and complications of delivery. |
The adolescents had lower rates of PROM, placenta previa, prolonged labor, breech presentation, among other complications. |
| Martins et al.(33)
|
To analyze the association between pregnancy in adolescence and prematurity. |
There was an association between prematurity and the lower number of prenatal visits, late initiation of prenatal visits, LBW, and low level of schooling. |
| Santos et al.(34)
|
To identify the association between the maternal nutritional status and prenatal conditions with LBW and prematurity. |
Birth weight was associated with the intergestational interval, pre-gestational weight, pre-gestational BMI, and total weight gain during gestation. |
