scholarly journals Trends and factors related to adolescent pregnancies: an incidence trend and conditional inference trees analysis of northern Nicaragua demographic surveillance data

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Wilton Pérez ◽  
Katarina Ekholm Selling ◽  
Elmer Zelaya Blandón ◽  
Rodolfo Peña ◽  
Mariela Contreras ◽  
...  
Keyword(s):  
Adolescent Pregnancy ◽  
Local Community ◽  
Incidence Rates ◽  
Conditional Inference ◽  
Incidence Trend ◽  
Live Births ◽  
Early Motherhood ◽  
Conditional Inference Trees ◽  
Adolescent Pregnancies ◽  
Adolescent Birth

Abstract Background We aimed to identify the 2001–2013 incidence trend, and characteristics associated with adolescent pregnancies reported by 20–24-year-old women. Methods A retrospective analysis of the Cuatro Santos Northern Nicaragua Health and Demographic Surveillance 2004–2014 data on women aged 15–19 and 20–24. To calculate adolescent birth and pregnancy rates, we used the first live birth at ages 10–14 and 15–19 years reported by women aged 15–19 and 20–24 years, respectively, along with estimates of annual incidence rates reported by women aged 20–24 years. We conducted conditional inference tree analyses using 52 variables to identify characteristics associated with adolescent pregnancies. Results The number of first live births reported by women aged 20–24 years was 361 during the study period. Adolescent pregnancies and live births decreased from 2004 to 2009 and thereafter increased up to 2014. The adolescent pregnancy incidence (persons-years) trend dropped from 2001 (75.1 per 1000) to 2007 (27.2 per 1000), followed by a steep upward trend from 2007 to 2008 (19.1 per 1000) that increased in 2013 (26.5 per 1000). Associated factors with adolescent pregnancy were living in low-education households, where most adults in the household were working, and high proportion of adolescent pregnancies in the local community. Wealth was not linked to teenage pregnancies. Conclusions Interventions to prevent adolescent pregnancy are imperative and must bear into account the context that influences the culture of early motherhood and lead to socioeconomic and health gains in resource-poor settings.

scholarly journals Characteristics and adverse outcomes of Chinese adolescent pregnancies between 2012 and 2019

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yanxia Xie ◽  
Xiaodong Wang ◽  
Yi Mu ◽  
Zheng Liu ◽  
Yanping Wang ◽  
...  
Keyword(s):  
Adolescent Pregnancy ◽  
Gestational Age ◽  
Rural Areas ◽  
Reference Group ◽  
Perinatal Outcomes ◽  
Severe Anaemia ◽  
Adverse Outcomes ◽  
Near Miss ◽  
Adolescent Women ◽  
Adolescent Pregnancies

AbstractWe aimed to describe the characteristics of adolescent pregnancy, determine its effect on adverse maternal and perinatal outcomes and explore whether that association varies with gestational age with the goal of proposing specific recommendations for adolescent health in China. This study included 2,366,559 women aged 10–24 years who had singleton pregnancies between 2012 and 2019 at 438 hospitals. Adolescent pregnancy was defined as younger than 20 years of age. We used multivariable logistic regression to estimate the effects. Women aged 20–24 years served as the reference group in all analyses. The proportion of rural girls with adolescent pregnancies rebounded after 2015 even though common-law marriage in rural areas decreased. Higher risks of eclampsia (adjusted odds ratio (aOR) 1.87, 95% confidence interval (CI) 1.57 ~ 2.23), severe anaemia (aOR 1.18, 95% CI 1.09 ~ 1.28), maternal near miss (MNM; aOR 1.24, 95% CI 1.12 ~ 1.37), and small for gestational age (SGA; aOR 1.30, 95% CI 1.28 ~ 1.33) were observed when gestational age was > 37 weeks. Adolescent pregnancy was independently associated with increased risks of other perinatal outcomes. Further implementation of pregnancy prevention strategies and improved health care interventions are needed to reduce adolescent pregnancies and prevent adverse fertility outcomes among adolescent women in China at a time when adolescent fertility rate is rebounding.

Zur Entwicklung der modalenverstehen-Konstruktion: Ein Konservierungseffekt im Zuge der Auxiliarisierung

2020 ◽  
Vol 48 (1) ◽  
pp. 101-135
Author(s):  
Volodymyr Dekalo
Keyword(s):  
Random Forest ◽  
20Th Century ◽  
Semantic Space ◽  
Time Span ◽  
Conditional Inference ◽  
Fourth Period ◽  
Space Model ◽  
Previous Time ◽  
Conditional Inference Trees ◽  
Feature Based

AbstractThe present paper deals with item- and feature-based changes of the modal semi-schematic construction with verstehen in written German during the 20th century. To understand this development, the century is divided into four equal periods. Applying a simple collexeme analysis for each time span, the study ascertains which lexical verbs appear as typical items in a schematic slot constituting its collostructional profile. Comparing the distributional behavior manually in a pairwise fashion, the analysis reveals that solely three verbs, namely machen, umgehen and meistern, stay constantly highly attracted within the top collexemes of the verstehen-construction during the 20th century. Using a dependency-based semantic space model, the study demonstrates that the collostructional profile of the fourth period differs considerably from the previous time span. Utilizing random forest of conditional inference trees, changes in terms of usage features of the modal construction are pinpointed. As a result, its grammaticality degree has not increased demonstrating solely minor changes in temporal functionality as well as in realization of subject forms.

Pramface girls? Early motherhood, marginalisation and the management of stigma

2017 ◽  
Author(s):  
Mary Jane Kehily
Keyword(s):  
Local Community ◽  
Social Differences ◽  
Popular Discourse ◽  
Transition To Motherhood ◽  
Early Motherhood ◽  
First Child ◽  
Becoming A Mother ◽  
Cultural Sphere ◽  
The Uk ◽  
Late Modern

Mary Jane Kehily considers the phenomenon of young motherhood in the UK through policy and popular discourse. She looks at how women make the transition to motherhood in new times, to argues that early motherhood occupies a distinctive place within the context of late modern social change, marked by changing gender relations and women’s increased participation in the workforce. At a time when most women are delaying the birth of their first child, differences between women may be polarised and compounded by the experience of becoming a mother. She explores the way social differences between women may be played out in the cultural sphere of representations and practices of consumption. She argues that the stigmatised figure of early motherhood, configured colloquially as the marginal ‘pramface girl’ can be understood within the context of the local – community, family, biography and intergenerational perspectives.

Performance of Wireless Magnetometers for Stop Bar Detection at Signalized Intersections

2018 ◽  
Vol 2672 (45) ◽  
pp. 55-63 ◽  
Author(s):  
Jidong J. Yang ◽  
Bashan Zuo
Keyword(s):  
Environmental Conditions ◽  
Access Point ◽  
Signalized Intersections ◽  
Conditional Inference ◽  
Professional Judgment ◽  
Heavy Vehicles ◽  
Study Results ◽  
Adverse Weather ◽  
Reliable Detection ◽  
Conditional Inference Trees

Wireless magnetometers have been considered as a practical alternative to inductive loops and suitable for large intersections, where span wire is generally used for traffic signal support. In this paper, wireless magnetometers are evaluated for stop bar vehicle detection at signalized intersections. High-resolution detector data were collected in the field subjected to various weather and environmental conditions. Conditional inference trees were used to correlate detection errors with weather and environmental factors that potentially affect the performance of wireless magnetometers. The study results indicated that the wireless magnetometers are fairly robust to various environmental conditions, such as wind, lighting, and visibility. Frequent passing of heavy vehicles, common at large intersections, can cause communication interruption between in-pavement sensors and the access point. This likely increases false and stuck-on call errors, which could be aggravated by adverse weather (e.g., rain, fog, or snow). This communication interruption issue can be mitigated by proper installation of additional repeaters. Provided the interruption issues are site-specific, professional judgment and field test are required for proper system setup, which is critical to delivering accurate and reliable detection for the wireless magnetometer system.

scholarly journals Female Reproductive Failures in Mouse Adolescent Pregnancy

2021 ◽  
Author(s):  
Chen Yang ◽  
Yue Li ◽  
Hai-Yang Pan ◽  
Meng-Yuan Li ◽  
Ji-Min Pan ◽  
...  
Keyword(s):  
Adolescent Pregnancy ◽  
Embryo Implantation ◽  
Multiple Pregnancy ◽  
Perinatal Outcomes ◽  
Mature Female ◽  
Placental Development ◽  
Adolescent Pregnancies ◽  
Multiple Abnormalities

Abstract Background: There are around 300 million adolescent pregnancies worldwide, accounting for 11% of all births worldwide. Accumulating evidence demonstrates that many adverse perinatal outcomes are associated with adolescent pregnancies. However, how and why these abnormalities occur remain to be defined. Methods: To compare uterine maturity, implantation, decidualization and placental development between 25-30 days old and 3 months old mature female CD-1 strain mice. Both in vivo mouse pregnancy and in vitro cell culture were used. Western blot, real time RT-PCR, immunostaining and immunofluorescence were used to study the progress of pregnancy during two groups.Results: We found the litter size of adolescent pregnancy is significantly decreased from F1 to F3 generations compared to mature pregnancy. On days 8 and 12 of pregnancy, multiple abnormalities in placental and decidual developments appear in F3 adolescent pregnancy. On days 5 and 8, uterine endoplasmic reticulum stress is dysregulated compared to mature pregnancy. Embryo implantation and decidualization are also compromised in adolescent pregnancy. Many genes are abnormally expressed in adolescent estrous uteri. Conclusion: The uterine immaturities and abnormal implantation may cause multiple pregnancy failures in adolescent pregnancy.

The dative alternation in South Asian English(es)

2014 ◽  
Vol 35 (1) ◽  
pp. 7-31 ◽  
Author(s):  
Tobias Bernaisch ◽  
Stefan Th. Gries ◽  
Joybrato Mukherjee
Keyword(s):  
South Asian ◽  
Conditional Inference ◽  
The South ◽  
Double Object ◽  
Indian English ◽  
British English ◽  
Semantic Class ◽  
Dative Alternation ◽  
Syntactic Pattern ◽  
Conditional Inference Trees

The present paper focuses on the modelling of cross-varietal differences and similarities in South Asian English(es) and British English at the level of verb complementation. Specifically, we analyse the dative alternation with GIVE, i.e. the alternation between the double-object construction (John gave Mary a book) and the prepositional dative (John gave a book to Mary) as well as their passivised constructions with regard to the factors that potentially exert an influence on this alternation in seven varieties of English. The South Asian varieties under scrutiny are Bangladeshi English, Indian English, Maldivian English, Nepali English, Pakistani English and Sri Lankan English, while British English serves as the reference variety. The patterns of GIVE are annotated according to the following parameters including potential predictors of the dative alternation: syntactic pattern and semantic class of GIVE; syntactic complexity, animacy, discourse accessibility and pronominality of constituents (cf. Gries 2003b; Bresnan and Hay 2008). The choices of complementation patterns are then statistically modelled using conditional inference trees and a random-forest analysis. The results indicate that many of the predictors found to be relevant in British English are at play in the South Asian varieties, too. The syntactic pattern of GIVE is, in descending order, uniformly influenced by the predictors pronominality of recipient, length of recipient, semantic class of GIVE and length of patient. Interestingly, the predictor country is marginal in accounting for the dative alternation of GIVE across the varieties at hand. Based on this observation, we derive variety-independent protostructions, i.e. abstract combinations of (cross-varietally stable) features with high predictive power for a particular syntactic pattern, which we argue to be part of the lexicogrammatical “common core” (Quirk et al. 1985: 16) of English. The implications of the present paper are twofold. While the order of the predictors regarding their influence on the dative alternation is clearly compatible with earlier studies (cf. e.g. Green 1974; Ransom 1979; Hawkins 1994; Gries 2003b), the stability of the order across varieties of English calls for a) a more fine-grained gradation of linguistic forms and structures at the lexis-grammar interface as indicators of structural nativisation and b) a revision of earlier verb-complementational findings specific to individual or groups of varieties of South Asian English.

scholarly journals A Multivariate Study of T/V Forms in European Languages Based on a Parallel Corpus of Film Subtitles

2017 ◽  
Vol 15 (2) ◽  
pp. 153-172 ◽  
Author(s):  
Natalia Levshina
Keyword(s):  
Multivariate Analyses ◽  
The Other ◽  
Conditional Inference ◽  
Contextual Variables ◽  
Linguistic Differences ◽  
Parallel Corpus ◽  
Contextual Features ◽  
European Languages ◽  
Multivariate Study ◽  
Conditional Inference Trees

The present study investigates the cross-linguistic differences in the use of so-called T/V forms (e.g. French tu and vous, German du and Sie, Russian ty and vy) in ten European languages from different language families and genera. These constraints represent an elusive object of investigation because they depend on a large number of subtle contextual features and social distinctions, which should be cross-linguistically matched. Film subtitles in different languages offer a convenient solution because the situations of communication between film characters can serve as comparative concepts. I selected more than two hundred contexts that contain the pronouns you and yourself in the original English versions, which are then coded for fifteen contextual variables that describe the Speaker and the Hearer, their relationships and different situational properties. The creators of subtitles in the other languages have to choose between T and V when translating from English, where the T/V distinction is not expressed grammatically. On the basis of these situations translated in ten languages, I perform multivariate analyses using the method of conditional inference trees in order to identify the most relevant contextual variables that constrain the T/V variation in each language.

scholarly journals Cancer incidence trend in northern tunisia: 1994-2009

2019 ◽  
Vol 29 (Supplement_4) ◽  
Author(s):  
S Dhaouadi ◽  
A Cherif ◽  
M Osman ◽  
M Hsairi
Keyword(s):  
Public Health ◽  
Cancer Incidence ◽  
Demographic Data ◽  
Public Health Problem ◽  
Incidence Rates ◽  
Cervix Uteri ◽  
Major Public Health Problem ◽  
Northern Tunisia ◽  
Incidence Trend ◽  
North East

Abstract Background Cancer is a major public health problem in Tunisia. The objectives of this study were to describe the epidemiological pattern of cancer for all and main cancer sites in Northern Tunisia during the period 2007-2009 and to analyze it’s incidence trend between 1994 and 2009. Methods Cancer registry of Northern Tunisia was the source of data for the identification of patients for this study. This registry notify, since 1994, all cases of malignant tumor in people living in the District of Tunis, Nabeul, Zaghouan, Bizerte (North East) Beja, Jendouba, Kef and Siliana (North West). Cases were codified using the third version of International Classification of Diseases for Oncology. Demographic data were provided by the National Statistical Institute. Incidence trend analysis was achieved by using JoinPoint Software. Results During the period 2007-2009, the age-standardised incidence rate of all sites combined was 149.2/100 000 person-years and 112.3/100 000 person-years respectively among males and females. The sex ratio was 1.26. The mean age at diagnosis was 58.28±16.77 years. The most common sites for males were: lung, bladder, prostate and colorectal; while for females, they were breast, colorectal, thyroid and cervix uteri. Local stage at diagnosis was observed in 37.7% of cases. The highest incidence rates were observed in the District of Tunis and in the governorates of North East. The trend incidence cancer of all sites combined during the period from 1994 to 2009 was significantly risen except for stomach cancer among males and cervix uteri among females with annual percent changes of -2.5% and of -4.1% respectively. Conclusions Despite the existence of a national cancer strategy in Tunisia, many barriers affect the implementation of interventions; while the trend cancer incidence continues to rise particularly in males. Strengthening prevention strategy of this scourge is strongly recommended. Key messages Cancer is a major public health in world and in Tunisia. Prevention must be applied to reduce the incidence of cancer.

Vowel duration in English adjectives in attributive and predicative constructions

2019 ◽  
Vol 11 (4) ◽  
pp. 555-581
Author(s):  
JOAN BYBEE ◽  
RICARDO NAPOLEÃO DE SOUZA
Keyword(s):  
Random Forest ◽  
Mixed Effects ◽  
Mixed Effects Model ◽  
Conditional Inference ◽  
Statistical Techniques ◽  
Vowel Duration ◽  
Number Of Factors ◽  
Conditional Inference Trees ◽  
Construction Type ◽  
As Effects

abstractUsing ten English adjectives, this study tests the hypothesis that the vowels in adjectives in predicative constructions are longer than those in attributive constructions in spoken conversation. The analyses considered a number of factors: occurrence before a pause, lexical adjective, vowel identity, probability given surrounding words, and others. Two sets of statistical techniques were used: a Mixed-effects model and the Random Forest Analysis based on Conditional Inference Trees (CIT). Both analyses showed strong effects of predicative vs. attributive constructions and individual lexical adjectives on vowel duration in the predicted direction, as well as effects of many of the phonological variables tested. The results showed that the longer duration in the predicative construction is not due to lengthening before a pause, though it is related to whether the adjective is internal or final in the predicative construction. Nor is the effect attributable solely to the probability of the occurrence of the adjective; rather construction type has to be taken into account. The two statistical techniques complement each other, with the Mixed-effects model showing very general trends over all the data, and the Random Forest / CIT analysis showing factors that affect only subsets of the data.

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