Tag: statistics

Hum Brain Mapp. 2023 Feb 28. doi: 10.1002/hbm.26251. Online ahead of print.

ABSTRACT

Schizophrenia (SZ) is a severe mental disorder characterized by failure of functional integration (aka dysconnection) across the brain. Recent functional connectivity (FC) studies have adopted functional parcellations to define subnetworks of large-scale networks, and to characterize the (dys)connection between them, in normal and clinical populations. While FC examines statistical dependencies between observations, model-based effective connectivity (EC) can disclose the causal influences that underwrite the observed dependencies. In this study, we investigated resting state EC within seven large-scale networks, in 66 SZ and 74 healthy subjects from a public dataset. The results showed that a remarkable 33% of the effective connections (among subnetworks) of the cognitive control network had been pathologically modulated in SZ. Further dysconnection was identified within the visual, default mode and sensorimotor networks of SZ subjects, with 24%, 20%, and 11% aberrant couplings. Overall, the proportion of discriminative connections was remarkably larger in EC (24%) than FC (1%) analysis. Subsequently, to study the neural correlates of impaired cognition in SZ, we conducted a canonical correlation analysis between the EC parameters and the cognitive scores of the patients. As such, the self-inhibitions of supplementary motor area and paracentral lobule (in the sensorimotor network) and the excitatory connection from parahippocampal gyrus to inferior temporal gyrus (in the cognitive control network) were significantly correlated with the social cognition, reasoning/problem solving and working memory capabilities of the patients. Future research can investigate the potential of whole-brain EC as a biomarker for diagnosis of brain disorders and for neuroimaging-based cognitive assessment.

PMID:36852654 | DOI:10.1002/hbm.26251

Twin Res Hum Genet. 2023 Feb 28:1-5. doi: 10.1017/thg.2023.4. Online ahead of print.

ABSTRACT

An abnormal alanine aminotransferase (ALT) level is predictive of disease and all-cause mortality and may indicate liver injury. Using twin modeling, the genetic and environmental factors that affect human serum ALT levels have been well studied for the populations in the different countries, and the results showed moderate-to-high heritability. However, the heritability of ALT level has not been explored in Chinese population. Thus, we recruited 369 pairs of twins (233 monozygotic and 136 dizygotic) from the Qingdao Twin Registry in China with a median age of 50 years (40-80 years). Correlation analysis and a structural equation model (SEM) were conducted to evaluate the heritability of ALT level. The data for age, gender, body mass index and alcohol consumption were set as covariates. Intrapair correlation in monozygotic twins was 0.64 (95%CI [.56, .71]) and 0.42 (95% CI [.28, .55]) in dizygotic twins. The SEM analysis indicated that 65% (95% CI [57%, 71%]) of the variation in ALT levels can be explained by additive genetics and 35% (95% CI [29%, 44%]) of the variation is attributed to unique environmental factors or residuals. Shared environmental influences were not significant. In conclusion, serum ALT variations exhibited strong genetic effects. The variation could also be explained by unique environmental factors. However, shared environmental factors have a minor impact on the serum ALT level.

PMID:36852647 | DOI:10.1017/thg.2023.4

Nurs Open. 2023 Feb 28. doi: 10.1002/nop2.1657. Online ahead of print.

ABSTRACT

AIM: This study aimed to calculate the total daily nursing workload and the optimal number of nurses per general unit based on the nursing intensity.

DESIGN: This study was conducted using a cross-sectional study.

METHODS: Three units at one general hospital were investigated. Patient classification according to nursing needs was performed for over 10 days in each unit in September 2018. The direct and non-direct nursing time and nursing intensity scores were analysed using descriptive statistics.

RESULTS: For the internal medicine unit, the average direct nursing time per patient was 1.0, 1.5, 2.2 and 2.9 h for Groups 1, 2, 3 and 4, respectively. For the surgical unit, the average direct nursing time per patient was 0.9, 1.4, 2.1 and 2.6 h for Groups 1, 2, 3 and 4, respectively. 5 and 9 additional nurses were needed in the internal medicine and surgical nursing units.

PATIENT CONTRIBUTION: This study confirmed that the optimal number of nurses was not achieved and that the nursing intensity was very high. Long-term efforts, such as improving the nursing environment, should be made to ensure an optimal number of nurses in various nursing units.

PMID:36852629 | DOI:10.1002/nop2.1657

Inquiry. 2023 Jan-Dec;60:469580231155716. doi: 10.1177/00469580231155716.

ABSTRACT

The primary method for preventing health and health-related problems in diabetic people is glycemic control. Numerous studies have documented the importance of glycemic control and the factors that influence it. However, the results are dispersed. This study sought to identify the prevalence of poor glycemic control and associated factors in Ethiopia. Findings will be crucial to reduce the burden of poor glycemic control. Comprehensive search was performed from databases: PubMed, Global Health, CINAHL, IRIS, and FSTA. Gray literature sources were also explored. This document was prepared based on the PRISMA flowchart. The protocol is registered in PROSPERO (ID: CRD42022296583). STATA software was used for data analyses and I² test with Cochrane Q statistics, and forest plot were used to verify heterogeneity. When the I² value was higher than 50% and the p-value was 0.05, heterogeneity was deemed significant. To confirm publication bias, a funnel plot with an Egger’s regression test was performed. The factors related to poor glycemic control were reported using pooled odds ratios (POR) and a 95% confidence interval. In this study, 46 papers totaling 15 457 people were used to calculate the pooled estimates. It was determined that 32.6% (95% CI: 28.3, 36.9) and 61.92% (95% CI: 57.92, 65.92) of the subjects, respectively, had good and poor glycemic control. Being male protected against poor glycemic control, while poor diet adherence, lack of exercise, poor adherence to anti-diabetic medications, and smoking increased the likelihood of poor glycemic control. Lack of formal education, no family history of diabetes, lack of glucometer for blood glucose monitoring, comorbidity, being overweight and prolonged length of stay with diabetes all contributed to poor glycemic control. Ethiopia had a fairly high rate of poor glycemic control. The main determinants are lifestyle factors. Therefore, it is important to focus on behavioral interventions.

PMID:36852627 | DOI:10.1177/00469580231155716

Hum Brain Mapp. 2023 Feb 28. doi: 10.1002/hbm.26237. Online ahead of print.

ABSTRACT

Visual impairment and retinal neurodegeneration are intrinsically connected and both have been associated with cognitive impairment and brain atrophy, but the underlying mechanisms remain unclear. To investigate whether transneuronal degeneration is implicated, we systematically assessed the relation between visual function and retinal, visual pathway, hippocampal and brain degeneration. We analyzed baseline data from 3316 eligible Rhineland Study participants with visual acuity (VA), optical coherence tomography (OCT), and magnetic resonance imaging (MRI) data available. Regional volumes, cortical volume, and fractional anisotropy (FA) were derived from T1-weighted and diffusion-weighted 3 T MRI scans. Statistical analyses were performed using multivariable linear regression and structural equation modeling. VA and ganglion cell layer (GCL) thinning were both associated with global brain atrophy (SD effect size [95% CI] -0.090 [-0.118 to -0.062] and 0.066 [0.053-0.080], respectively), and hippocampal atrophy (-0.029 [-0.055 to -0.003] and 0.114 [0.087-0.141], respectively). The effect of VA on whole brain and hippocampal volume was partly mediated by retinal neurodegeneration. Similarly, the effect of retinal neurodegeneration on brain and hippocampal atrophy was mediated through intermediate visual tracts, accounting for 5.2%-23.9% of the effect. Visual impairment and retinal neurodegeneration were robustly associated with worse brain atrophy, FA, and hippocampal atrophy, partly mediated through disintegration of intermediate visual tracts. Our findings support the use of OCT-derived retinal measures as markers of neurodegeneration, and indicate that both general and transneuronal neurodegeneration along the visual pathway, partly reflecting visual impairment, account for the association between retinal neurodegeneration and brain atrophy.

PMID:36852616 | DOI:10.1002/hbm.26237

Minerva Dent Oral Sci. 2023 Feb 28. doi: 10.23736/S2724-6329.23.04774-5. Online ahead of print.

ABSTRACT

BACKGROUND: Dental caries still represents a major public health problem, as it is the most widespread noncommunicable disease. The enamel of deciduous teeth is less resistant than permanent dentition and for this reason demineralization, and consequent caries formation, progresses more rapidly. The purpose of this study is to investigate the correlation between the incidence of caries and intake of sugary drinks in pediatric patients.

METHODS: The study included 526 subjects (295 males, 231 females) between the ages of 2 and 15 years old. Several variables were examined, including: gender, age, separate values of the decay missing filled teeth (DMFT) epidemiological index (for both deciduous and permanent dentition), quantity and quality of sugary drinks taken daily, daily brushing frequency, parental nationality and socio-economic status. A multivariate analysis conducted (using a simple linear regression model) to verify the association between soft drink consumption and DMF, including a series of confounding variables (namely, sex, brushing frequency and parents’ nationality).

RESULTS: From the results of the statistical analysis of the variables examined, a correlation between the incidence of caries in children aged between 2 and 14 years and brushing frequency, consumption of sugary drinks and parents’ nationality was found.

CONCLUSIONS: It is important to raise awareness and properly inform patients and healthcare colleagues about the importance of oral health. Taking good care of our oral health represents part of implementation of the lifestyle and the quality of life of the future generations.

PMID:36852612 | DOI:10.23736/S2724-6329.23.04774-5

Hum Brain Mapp. 2023 Feb 28. doi: 10.1002/hbm.26248. Online ahead of print.

ABSTRACT

While verbal memory is among the most compromised cognitive domains in schizophrenia (SZ), its neural substrates remain elusive. Here, we explored the structural and functional brain network correlates of verbal memory impairment in SZ. We acquired diffusion and resting-state functional MRI data of 49 SZ patients, classified as having preserved (VMP, n = 22) or impaired (VMI, n = 26) verbal memory based on the List Learning task, and 55 healthy controls (HC). Structural and functional connectivity matrices were obtained and analyzed to assess associations with disease status (SZ vs. HC) and verbal memory impairment (VMI vs. VMP) using two complementary data-driven approaches: threshold-free network-based statistics (TFNBS) and hybrid connectivity independent component analysis (connICA). TFNBS showed altered connectivity in SZ patients compared with HC (p < .05, FWER-corrected), with distributed structural changes and functional reorganization centered around sensorimotor areas. Specifically, functional connectivity was reduced within the visual and somatomotor networks and increased between visual areas and associative and subcortical regions. Only a tiny cluster of increased functional connectivity between visual and bilateral parietal attention-related areas correlated with verbal memory dysfunction. Hybrid connICA identified four robust traits, representing fundamental patterns of joint structural-functional connectivity. One of these, mainly capturing the functional connectivity profile of the visual network, was significantly associated with SZ (HC vs. SZ: Cohen’s d = .828, p < .0001) and verbal memory impairment (VMP vs. VMI: Cohen’s d = -.805, p = .01). We suggest that aberrant connectivity of sensorimotor networks may be a key connectomic signature of SZ and a putative biomarker of SZ-related verbal memory impairment, in consistency with bottom-up models of cognitive disruption.

PMID:36852587 | DOI:10.1002/hbm.26248

J Biosoc Sci. 2023 Feb 28:1-5. doi: 10.1017/S0021932023000020. Online ahead of print.

ABSTRACT

In the U.S., approximately 11% of infants are born small for gestational age (SGA). While there are many known behavioral risk factors for SGA births, there are still many factors yet to be explored. The purpose of this study was to investigate the maternal early menarche (< 12 years old)- SGA birth association. Data were retrieved from the 2011-2017 National Survey of Family Growth, and multivariate logistic regression was used to evaluate the association. Approximately 4% of mothers reported having an SGA infant and 24% of mothers reported early age at menarche. After controlling for maternal age, race/ethnicity, and annual household income, early menarche was associated with 3% increased odds of SGA, although this finding was not statistically significant (adjusted odds ratio: 1.03, 95% CI: 0.70, 1.53). Additional research is needed on the long-term birth outcomes and health consequences of early menarche.

PMID:36852575 | DOI:10.1017/S0021932023000020

Psychiatr Serv. 2023 Feb 28:appips20220267. doi: 10.1176/appi.ps.20220267. Online ahead of print.

ABSTRACT

OBJECTIVE: Evaluation of the effectiveness of integration of depression and alcohol use disorder care into primary health care in low- and middle-income countries (LMICs) is limited. The authors aimed to quantify the effectiveness of integrating mental health care into primary care by examining depression and alcohol use disorder outcomes. The study updates a previous systematic review summarizing research on care integration in LMICs.

METHODS: Following PRISMA guidelines, the authors included studies from the previous review and studies published from 2017 to 2020 that included adults with alcohol use disorder or depression. Studies were evaluated for type of integration model with the typology developed previously. A meta-analysis using a random-effects model to assess effectiveness of integrated interventions was conducted. Meta-regression analyses to examine the impact of study characteristics on depression and alcohol use disorder outcomes were conducted.

RESULTS: In total, 49 new articles were identified, and 74 articles from the previous and current studies met inclusion criteria for the meta-analysis. Overall random effect sizes were 0.28 (95% CI=0.22-0.35) and 0.17 (95% CI=0.11-0.24) for studies targeting care integration for depression or for alcohol use disorder, respectively, into primary care in LMICs. High heterogeneity within and among studies was observed. No significant association was found between country income level and depression and alcohol use outcomes. However, differences in effect sizes between types of integration model were statistically significant (p<0.001).

CONCLUSIONS: Integration of mental health care into primary health care in LMICs was found to improve depression and alcohol use disorder outcomes. This evidence should be considered when designing interventions to improve mental health screening and treatment in LMICs.

PMID:36852551 | DOI:10.1176/appi.ps.20220267

Clin Oral Implants Res. 2023 Feb 28. doi: 10.1111/clr.14056. Online ahead of print.

ABSTRACT

OBJECTIVES: To compare esthetics at single immediately placed implants with and without soft tissue augmentation.

MATERIAL AND METHODS: Patients with non-restorable maxillary teeth in the esthetic zone were assigned into 2 groups: immediately placed implants with simultaneous vascularized interpositional periosteal connective tissue grafting (VIP-CTG) or non-grafted immediately placed implants (NG). The outcomes included: pink esthetic score (PES), gingival thickness, keratinized tissue width, buccal bone changes, marginal bone loss, pain, and satisfaction.

RESULTS: Eighteen implants were included.At two years the mean value for PES was 12 ± 3.2 for the VIP-CTG and 12.9 ± 1.3 for the NG (p = 0.855). Mucosal thickness and keratinized tissue width showed no statistically significant difference between the two groups (p = 0.253) and (p = 0.931) respectively. Clinically buccal bone showed mean bone loss of 2.03 ± 1.57 mm for VIP-CTG and 1.09 ±1.3 mm for NG (p = 0.247) and radiographically showed 1.67 ± 0.84 mm at the VIP-CTG and 1.16 ± 0.47 mm at the NG (p = 0.118). No statistical significant difference between both groups was demonstrated regarding marginal bone level changes (p = 0.142), pain (p = 0.622) nor satisfaction (p = 0.562) at any time point.

CONCLUSION: Simultaneous soft tissue grafting with immediate implant placement did not provide a more favorable outcome regarding esthetics or alveolar bone preservation effect. Undisturbed healing with the least surgical intervention seems to provide more favorable outcomes.

PMID:36852545 | DOI:10.1111/clr.14056