Tag: statistics

Child Adolesc Psychiatry Ment Health. 2022 May 23;16(1):38. doi: 10.1186/s13034-022-00466-x.

ABSTRACT

BACKGROUND: Previous work has examined the association of aggression levels and callous-unemotional traits with outcome expectations and values regarding the consequences of aggression. Less work has examined the outcome expectations and values regarding the consequences of aggression of adolescents with Conduct Disorder (CD). Also, no studies have examined links between irritability (a second socio-affective trait associated with CD) and these social cognitive processes despite the core function of anger in retaliatory aggression and establishing dominance.

METHOD: The current study, investigating these issues, involved 193 adolescents (typically developing [TD; N = 106], 87 cases with CD [N = 87]). Participants completed an adaptation of the Outcomes Expectations and Values Questionnaire and were assessed for CU traits and irritability via the Inventory of Callous-Unemotional traits and the Affective Reactivity Index.

RESULTS: While CD was associated with atypical outcome expectations this was not seen within statistical models including CU traits and irritability. CU traits were associated with decreased expectation that aggression would result in feelings of remorse and victim suffering, as well as decreased concern that aggressive acts would result in punishment and victim suffering. Irritability was associated with increased expectations and concern that aggression would result in dominance and forced respect.

CONCLUSIONS: The results suggest that CU traits and irritability, often present in youth with CD, are associated with different forms of maladaptive outcome expectations and values regarding the consequences of aggression. This suggests that the atypical social cognitive processes underlying aggressive behavior among youth exhibiting CU traits may differ from those exhibiting problems regulating anger.

PMID:35606814 | DOI:10.1186/s13034-022-00466-x

Pediatr Rheumatol Online J. 2022 May 23;20(1):38. doi: 10.1186/s12969-022-00696-5.

ABSTRACT

BACKGROUND: Familial Mediterranean fever (FMF) is an autoinflammatory disease that can have conduction disturbances and cardiac rhythm disorders as manifestations of cardiac involvement. The aim of the study is to assess the susceptibility of children with FMF to cardiac repolarization abnormalities and therefore arrhythmia in children with FMF.

METHODS: A cross sectional study conducted on 60 children had FMF and 40 age and sex matched healthy controls. Cardiac repolarization markers, cardiac dimensions and functions were assessed by electrocardiogram (ECG) and conventional echocardiography in patients and controls.

RESULTS: The mean ± SD age of the patients was 10.43 ± 3.472 years, corrected QT (QTc) and the ratio of peak to end T wave (Tpe) over QTc interval (Tpe /QTc) increased significantly in FMF patients more than healthy control (p value 0.023 and 0.022 respectively). P wave dispersion (Pd) was significantly higher in FMF patients with amyloidosis (p value 0.030). No significant difference was found in cardiac dimensions and functions between the two groups. We found a statistically negative correlation between Pd and age of patients at time of study, age of disease onset and age at diagnosis. On the other hand, we found a statistically significant positive correlation between Pd with number of attacks per year and disease severity score. Furthermore, Tpe/QTc ratio correlated with FMF 50 score, QTc correlated with 24 hours proteinuria. QT, JT intervals correlated with fibrinogen.

CONCLUSIONS: FMF Patients may have increased risk of arrhythmia and should be monitored on regular basis. Compliance to colchicine therapy and better disease control might play a role in decreasing this risk.

PMID:35606812 | DOI:10.1186/s12969-022-00696-5

Arthritis Res Ther. 2022 May 23;24(1):120. doi: 10.1186/s13075-022-02801-1.

ABSTRACT

BACKGROUND: Osteoarthritis (OA) is a slowly developing and debilitating disease, and there are no validated specific biomarkers for its early detection. To improve therapeutic approaches, identification of specific molecules/biomarkers enabling early determination of this disease is needed. This study aimed at identifying, with the use of proteomics/mass spectrometry, novel OA-specific serum biomarkers. As obesity is a major risk factor for OA, we discriminated obesity-regulated proteins to target only OA-specific proteins as biomarkers.

METHODS: Serum from the Osteoarthritis Initiative cohort was used and divided into 3 groups: controls (n=8), OA-obese (n=10) and OA-non-obese (n=10). Proteins were identified and quantified from the liquid chromatography-tandem mass spectrometry analyses using MaxQuant software. Statistical analysis used the Limma test followed by the Benjamini-Hochberg method. To compare the proteomic profiles, the multivariate unsupervised principal component analysis (PCA) followed by the pairwise comparison was used. To select the most predictive/discriminative features, the supervised linear classification model sparse partial least squares regression discriminant analysis (sPLS-DA) was employed. Validation of three differential proteins was performed with protein-specific assays using plasma from a cohort derived from the Newfoundland Osteoarthritis.

RESULTS: In total, 509 proteins were identified, and 279 proteins were quantified. PCA-pairwise differential comparisons between the 3 groups revealed that 8 proteins were differentially regulated between the OA-obese and/or OA-non-obese with controls. Further experiments using the sPLS-DA revealed two components discriminating OA from controls (component 1, 9 proteins), and OA-obese from OA-non-obese (component 2, 23 proteins). Proteins from component 2 were considered related to obesity. In component 1, compared to controls, 7 proteins were significantly upregulated by both OA groups and 2 by the OA-obese. Among upregulated proteins from both OA groups, some of them alone would not be a suitable choice as specific OA biomarkers due to their rather non-specific role or their strong link to other pathological conditions. Altogether, data revealed that the protein CRTAC1 appears to be a strong OA biomarker candidate. Other potential new biomarker candidates are the proteins FBN1, VDBP, and possibly SERPINF1. Validation experiments revealed statistical differences between controls and OA for FBN1 (p=0.044) and VDPB (p=0.022), and a trend for SERPINF1 (p=0.064).

CONCLUSION: Our study suggests that 4 proteins, CRTAC1, FBN1, VDBP, and possibly SERPINF1, warrant further investigation as potential new biomarker candidates for the whole OA population.

PMID:35606786 | DOI:10.1186/s13075-022-02801-1

J Orthop Surg Res. 2022 May 23;17(1):287. doi: 10.1186/s13018-022-03177-3.

ABSTRACT

BACKGROUND: Arthrometry has been introduced to evaluate the laxity of ankle joint in recent years. However, its role in the diagnosis of chronic ankle instability is still debatable. Therefore, we assessed the diagnostic accuracy of a digital arthrometer in terms of sensitivity and specificity.

METHODS: According to the inclusion and exclusion criteria proposed by the International Ankle Consortium, we recruited 160 uninjured ankles (control group) and 153 ankles with chronic ankle instability (CAI group). Ankle laxity was quantitively measured by a validated digital arthrometer. Data of loading force and joint displacement were recorded in a continuous manner. Differences between the control and CAI groups were compared using 2-tailed independent t test. A receiver operating characteristic curve analysis was used to calculate area under a curve, sensitivity and specificity.

RESULTS: Load-displacement curves of the two groups were depicted. Differences of joint displacement between the control and CAI groups were compared at 30, 45, 60, 75, 90, 105 and 120 N, which were all of statistical significance (all p < 0.001) with the largest effect size at 90 N. Statistical significance was found in the differences between the two groups in load-displacement ratio at 10-120 N, 10-40 N, 40-80 N and 80-120 N (all p < 0.001), with the largest effect size at 10-40 N. Load-displacement ratio at the interval of 10-40 N had the highest area under a curve (0.9226), with sensitivity and specificity of 0.804 and 0.863, respectively, when the cutoff point was 0.1582 mm/N.

CONCLUSION: The digital arthrometer measurement could quantitively analyze the ankle laxity with high diagnostic accuracy. The load-displacement ratio would be a reliable and promising approach for chronic ankle instability diagnosis. Level of evidence level II.

PMID:35606774 | DOI:10.1186/s13018-022-03177-3

BMC Endocr Disord. 2022 May 23;22(1):136. doi: 10.1186/s12902-022-01047-x.

ABSTRACT

BACKGROUND: Microvascular complications lead to disability, dependency, and accelerated morbidity and mortality. This study aimed to identify predictors of blood glucose change and time to microvascular complications among patients with type 2 diabetes.

METHODS: A retrospective cohort study was conducted among type 2 diabetes mellitus patients enrolled between December 2014 and December 2015 at Felege Hiwot and Debre Markos Referral Hospital. A total of 318 T2DM patients were included in the study. Joint modelling of longitudinal and survival analysis was employed to identify predictors of Blood Glucose Change and Microvascular Complications in Type 2 Diabetes Mellitus Patients.

RESULTS: The prevalence of microvascular complications in Type 2 diabetes patients was 26.3%, 95%confidence interval(CI):(21.5, 31.1). Of which, half of the patients developed a microvascular complication after 30 months from the onset of the follow-up. The significant predictors of developing microvascular complication were positive proteinurea (adjusted hazard ratio (AHR) = 1.418, 95%CI: 1.080, 1.861), Serum creatinine (AHR = 3.704, 95%CI: 1.992, 6.887), Weight (AHR = 1.058, 95%CI: 1.023, 1.094), and log fasting blood glucose(log(FBS))(AHR = 1.013, 95%CI: 1.010, 1.015). The predictors of fasting blood glucose progression were higher baseline FBS(est(estimate) = 0.002,95%CI:0.0018, 0.0022), Systolic blood pressure (SBP) (est = 0.003, 95%CI: 0.002, 0.004), diastolic blood pressure (DBP) (est = 0.002, 95%CI: 0.0002, 0.004), and age (est = 0.003, 95%CI: 0.001, 0.004).

CONCLUSION: The progression of the fasting blood glucose level for rural patients was faster than for urban patients. Patients having higher baseline FBS, previous hypertension history, higher SBP, higher DBP, older age, and fewer visits to the hospital have a relatively more progressive change in blood sugar levels. Patients having higher triglyceride levels, positive proteinuria, higher fasting blood sugar, higher weight, and a lesser number of hospital visits have a higher risk of developing a complication. In response to this finding, an aggressive intervention that targets to prevent microvascular complications is required.

PMID:35606785 | DOI:10.1186/s12902-022-01047-x

BMC Oral Health. 2022 May 23;22(1):197. doi: 10.1186/s12903-022-02234-x.

ABSTRACT

BACKGROUND: To examine the influence of mouth breathing on maxillofacial and airway development in children and adolescents with different cervical vertebral maturation stages.

METHODS: Lateral cephalometric radiograph of a total of 120 children and adolescents, 64 girls and 56 boys (7-15 years old), diagnosed with mouth breathing were examined. Maxillofacial hard tissue, soft tissue and airway measurements were obtained using both manual and digital techniques. Independent samples t-test was performed to compare the difference between the measured indexes and the standard values.

RESULTS: As for maxillofacial hard tissue, SNB (CS1-CS5), GoGn (CS1-CS5), ArGoNa (CS1-CS5), ArGo (CS1-CS2) and SNA (CS1-CS2) in mouth breathing children and adolescents were below the standard values (P < 0.05). NGoMe (CS1-CS5), SN-MP (CS1-CS4), SN-PP (CS1-CS4), PP-MP (CS1-CS3) and SN-GoGn (CS1-CS2) in mouth breathing children and adolescents were above the standard values (P < 0.05). As for maxillofacial soft tissue measurements, H angle (CS1-CS5), lower lip length (CS1-CS5), upper lip protrusion (CS1-CS5), upper lip length (CS1-CS4), lower lip protrusion (CS1-CS3), surface Angle (CS2-CS3) and nasolabial angle (CS2) in mouth breathing children and adolescents were above the standard values with statistically significance (P < 0.05). As for airway measurements, PAS (CS1, CS2, CS5) in mouth breathing children and adolescents was above the standard value with statistical significance (P < 0.05).

CONCLUSIONS: Mouth breathing had a real effect on maxillofacial and airway development, which differed among mouth breathing children and adolescents with different cervical vertebral maturation.

PMID:35606773 | DOI:10.1186/s12903-022-02234-x

BMC Med Educ. 2022 May 23;22(1):395. doi: 10.1186/s12909-022-03461-0.

ABSTRACT

BACKGROUND: Education plays a pivotal role in producing qualified human power that accelerates economic development and solves the real problems of a community. Students are also expected to spend much of their time on their education and need to graduate with good academic results. However, the trend of graduating students is not proportional to the trend of enrolled students and an increasing number of students commit readmission, suggesting that they did not perform well in their academics. Thus, the study aimed to identify the determinants of academic performance among university students in Southern Ethiopia.

METHOD: Institution-based cross-sectional study was conducted from December 1 to 28, 2020. A total of 659 students were enrolled and data was collected using a self-administered questionnaire. A multistage sampling technique was applied to select study participants. Data were cleaned and entered into Epi-Data version 4.6 and exported to SPSS version 25 software for analysis. Bivariable and multivariable data analysis were computed and a p-value of ≤0.05 was considered statistically significant. Smoking, age, and field of study were significantly associated with academic performance.

RESULT: Four hundred six (66%) of students had a good academic performance. Students aged between 20 and 24 years (AOR = 0.43, 95% CI = 0.22-0.91), and medical/ health faculty (AOR = 2.46, 95% CI = 1.45-4.20) were significant associates of good academic performance. Students who didn’t smoke cigarettes were three times more likely to score good academic grades compared to those who smoke (AOR = 3.15, 95% CI = 1.21-7.30).

CONCLUSION: In this study, increased odds of good academic performance were observed among students reported to be non-smokers, adults, and medical/health science students. Reduction or discontinuation of smoking is of high importance for good academic achievement among these target groups. The academic environment in the class may be improved if older students are invited to share their views and particularly their ways of reasoning.

PMID:35606767 | DOI:10.1186/s12909-022-03461-0

BMC Health Serv Res. 2022 May 23;22(1):687. doi: 10.1186/s12913-022-08068-1.

ABSTRACT

BACKGROUND: Physicians, who perform disability assessments for the Dutch Social Security Institute, were urged to conduct phone consultations from their homes to prevent the spread of COVID-19. The purpose of the study was to evaluate the perspectives of physicians regarding phone consultations during the COVID-19 pandemic. Additionally, to explore physicians’ views on a more widespread future use of phone consultations in the context of work disability assessments.

METHODS: An electronic survey conducted from June to August 2020 included 41 statements categorized into themes previously identified in both the literature on physicians’ phone consultations and emerging from daily practice. All 1081 physicians working at the Dutch Social Security Institute were invited by e-mail to participate in the survey. Participants indicated on a 5-point Likert scale whether they strongly disagreed, disagreed, neither agreed nor disagreed, agreed or strongly agreed with the statements. The collected data were analysed using descriptive statistics.

RESULTS: In general, physicians had become accustomed to perform phone consultations. Negative experiences included difficulties in getting an impression of patients and assessing patients’ functional limitations. About half of physicians found that phone consultations took more effort, 61% asked more questions due to no direct patient observations. According to 67%, it is mostly necessary to perform an in-person consultation to adequately assess functional limitations of a patient with persistent medically unexplained physical symptoms. A great majority did not prefer telephone consultations to in-person consultations. However, more than half of physicians perceive a greater preference for phone consultations in the future than previously. 56% thought that replacement of in-person consultations with phone consultations in the future might lead to more complaints.

CONCLUSIONS: Perspectives and future views varied among physicians performing disability assessments by phone. A majority of physicians experienced difficulties with different aspects of the assessment. Despite these difficulties, most physicians support to continue the wider use of phone consultations. To improve remote disability assessments it is required to gain more insights into conditions under which a phone assessment can be as diligent as an in-person assessment.

PMID:35606761 | DOI:10.1186/s12913-022-08068-1

BMC Cancer. 2022 May 24;22(1):576. doi: 10.1186/s12885-022-09674-2.

ABSTRACT

BACKGROUND: Advanced non-squamous non-small cell lung cancer (NS-NSCLC) patients without driver gene mutations are usually treated with immune checkpoint inhibitors (ICIs) plus pemetrexed as maintenance therapy after first-line ICIs plus 4-6 cycles of pemetrexed/platinum. Some patients in the real world receive ICIs monotherapy as maintenance therapy. No clinical study has compared the efficacy and safety of ICIs with or without pemetrexed as maintenance therapy.

METHODS: We performed a retrospective study analyzing clinical data of patients with NS-NSCLC who were diagnosed in Zhejiang Cancer Hospital from September 2018 to May 2021 and received maintenance therapy after 4-6 cycles of ICIs plus pemetrexed/platinum. Patients were divided into ICIs plus pemetrexed group and ICIs monotherapy group. Progression Free Survival 1 (PFS1) and PFS2, defined as the interval from the date of initial treatment and maintenance therapy to the date of systemic progression/death or the last follow-up, respectively.

RESULTS: A total of 120 patients received ICIs with or without pemetrexed as maintenance therapy. Eighty-two patients received ICIs plus pemetrexed as maintenance therapy, and 38 patients received ICIs monotherapy. There were no statistically significant difference in median PFS1 between the ICIs monotherapy group and ICIs plus pemetrexed group (12.00 months vs. 12.07 months, P = 0.979). Among patients with PD-L1 TPS < 1%, the median PFS1 was worse with ICIs monotherapy (9.50 months vs. 14.20 months, P = 0.039). Among patients with PD-L1 TPS ≥50% or 1-49%, the median PFS1 in both groups was not statistically significant (P = 0.866, P = 0.589, respectively). Results for median PFS2 were similar to median PFS1, with statistically significantly different only in patients with PD-L1 TPS < 1% (P = 0.008). The 2-year survival rates of the two groups were similar (66.7% vs. 69.5%, P = 0.812). The incidence of fatigue was significantly higher in the ICIs plus pemetrexed group (P = 0.023).

CONCLUSIONS: ICIs with or without pemetrexed can be used as maintenance therapy after first-line ICIs plus 4-6 cycles of pemetrexed/platinum in patients with advanced NS-NSCLC based on PD-L1 expression.

PMID:35606756 | DOI:10.1186/s12885-022-09674-2

BMC Pediatr. 2022 May 23;22(1):301. doi: 10.1186/s12887-022-03370-7.

ABSTRACT

BACKGROUND: Diarrhea is the second most common cause of death in under-five children. Fluid and food replacement during diarrheal episodes have a paramount effect to avert morbidity and mortality. However, there is limited information about feeding practices. This study aimed to assess the prevalence of drinking or eating more and associated factors during diarrhea among under-five children in East Africa using demographic and health surveys (DHSs).

METHODS: Secondary data analysis was done on DHSs 2008 to 2018 in 12 East African Countries. Total weighted samples of 20,559 mothers with their under-five children were included. Data cleaning, coding, and analysis were performed using Stata 16. Multilevel binary logistic regression were performed to identify factors associated with drinking or eating more during diarrheal episodes. Adjusted Odds Ratio (AOR) with a 95% CI, and p-value < 0.05 were used to declare statistical significance.

RESULTS: Prevalence of drinking or eating more than usual during diarrhea disease in East Africa was 26.27%(95% CI: 25.68-26.88). Mothers age > 35 years (AOR: 1.14, 95% CI: (1.03, 1.26), mothers primary education (AOR: 1.17, 95% CI: 1.06,1.28), secondary education (AOR: 1.43,95% CI: 1.27,1.61), and higher education (AOR: 1.42,95% CI: 1.11,1.81), occupation of mothers (agriculture, AOR: 2.2, 95% CI: 1.3-3.6), sales and services, AOR = 1.20, CI:1.07,1.34), manual, AOR =1.28,95% CI: 1.11,1.44), children age 1-2 years (AOR =1.34,95% CI: 1.22,1.46) and 3-4 years (AOR =1.36,95% CI: 1.20,1.55), four and more antenatal visits (AOR: 1.14,95% CI: 1.03,1.27), rich wealth status (AOR:1.27,95% CI: 1.16,1.40), birth in health facility (AOR = 1.19, 95%CI: 1.10, 1.30) and visit health facility (AOR = 1.12, 95%CI: 1.03, 1.22) were associated with drinking or eating more.

CONCLUSION: The prevalence of drinking or eating more is low in East Africa. Maternal age, occupation, antenatal care visit, marital status, educational status, wealth status, place of delivery, visiting health facility, and child age were significantly associated with drinking or eating more during diarrheal episodes. Health policy and programs should focus on educating mothers, improving the household wealth status, encouraging women to contact health facilities for better feeding practices of children during diarrheal episodes.

PMID:35606750 | DOI:10.1186/s12887-022-03370-7