Category: Statistics

PLoS One. 2024 Jun 17;19(6):e0303898. doi: 10.1371/journal.pone.0303898. eCollection 2024.

ABSTRACT

Non-traumatic orthopedic conditions are pathological conditions involving musculoskeletal system that includes muscles, tendons, bone and joints and associated with frequent medical and surgical care and high treatment costs. There is paucity of information on the pattern of non-traumatic orthopedic conditions in low and middle income countries. The purpose of this study was to determine the epidemiology of non-traumatic orthopedic conditions among inpatients at the Kenyatta National Hospital in Kenya. This was a cross-sectional study with a sample of 175 charts reviewed. Approximately, 70.3% of the inpatients were aged between 25 to 64 years of age with the mean age of 39.97 years (STD 18.78). Ever married tended to be older 53.5 (95% CI: 46.8-60.2) years than other marital statuses. Approximately, 60.6% were males, 38.9% had comorbidities and 49.1% were casuals or unemployed. All inpatients were Kenyans with Nairobi County comprising 52.6% of all inpatients. Approximately, 77.7% were self-referrals. The commonest non-trauma orthopaedic conditions were infection and non-union (35.4%) and spinal degenerative diseases (20.60%) and the least was limb deformities (1.70%). Compared to females, males were 3.703 (p<0.001) times more likely to have infection and non-union. Patients with primary, secondary and tertiary education were 88.2% (p<0.001), 75.6% (p<0.001) and 68.1% (p = 0.016) less likely to have infection and non-union compared to those with no or preschool education. Widows were 8.500 (p = 0.028) times more likely to have spinal degenerative disease than married. Males were 70.8% (p = 0.031) less likely to have osteoarthritis than females. Inpatients with secondary education were 5.250 (p = 0.040) times more likely to have osteoarthritis than those with no or preschool education. In conclusion, majority of inpatients were young and middle aged adults. Infection and non-union and spinal degenerative diseases were the most common non-trauma orthopedic conditions. While males and those with low education were more likely to have infection and non-union, married were more likely to have spinal degenerative disease. Osteoarthritis was more likely among female admissions.

PMID:38885257 | DOI:10.1371/journal.pone.0303898

JMIR Public Health Surveill. 2024 Jun 17;10:e56064. doi: 10.2196/56064.

ABSTRACT

BACKGROUND: Predicting vaccination behaviors accurately could provide insights for health care professionals to develop targeted interventions.

OBJECTIVE: The aim of this study was to develop predictive models for influenza vaccination behavior among children in China.

METHODS: We obtained data from a prospective observational study in Wuxi, eastern China. The predicted outcome was individual-level vaccine uptake and covariates included sociodemographics of the child and parent, parental vaccine hesitancy, perceptions of convenience to the clinic, satisfaction with clinic services, and willingness to vaccinate. Bayesian networks, logistic regression, least absolute shrinkage and selection operator (LASSO) regression, support vector machine (SVM), naive Bayes (NB), random forest (RF), and decision tree classifiers were used to construct prediction models. Various performance metrics, including area under the receiver operating characteristic curve (AUC), were used to evaluate the predictive performance of the different models. Receiver operating characteristic curves and calibration plots were used to assess model performance.

RESULTS: A total of 2383 participants were included in the study; 83.2% of these children (n=1982) were <5 years old and 6.6% (n=158) had previously received an influenza vaccine. More than half (1356/2383, 56.9%) the parents indicated a willingness to vaccinate their child against influenza. Among the 2383 children, 26.3% (n=627) received influenza vaccination during the 2020-2021 season. Within the training set, the RF model showed the best performance across all metrics. In the validation set, the logistic regression model and NB model had the highest AUC values; the SVM model had the highest precision; the NB model had the highest recall; and the logistic regression model had the highest accuracy, F1 score, and Cohen κ value. The LASSO and logistic regression models were well-calibrated.

CONCLUSIONS: The developed prediction model can be used to quantify the uptake of seasonal influenza vaccination for children in China. The stepwise logistic regression model may be better suited for prediction purposes.

PMID:38885032 | DOI:10.2196/56064

JMIR Form Res. 2024 Jun 17;8:e51292. doi: 10.2196/51292.

ABSTRACT

BACKGROUND: The start of the COVID-19 pandemic resulted in the implementation of nonpharmaceutical interventions by US institutions of higher education at an unprecedented level. During the backdrop of an emerging pandemic, younger adults (eg, college students) had an overall lower risk for severe outcomes for SARS-CoV-2, making this population a potential source of transmission for age groups with high susceptibility and negative health outcomes. We examine how college students’ level of concern for COVID-19 was influenced by different sources of information, their living status, income level, and other demographic identifiers and its association with prevention behavior change.

OBJECTIVE: We sought to examine the level of concern, defined as the extent to which the participant would take corrective action to mitigate contracting or spreading the virus (to family or friends) by using personal protective equipment such as a face mask, practicing social distancing, and following other public health recommendations, among college students during the COVID-19 pandemic.

METHODS: A cross-sectional, web-based survey was conducted in 2021 among 185 college students aged 18-41 years, with most living in New York City and the United States (n=134, 72.4%). Out of 185 college students, 94 provided their zip codes, with 51 of those college students indicating they lived in New York City areas. The participants completed the survey via a QR code. Study participants who did not complete the full survey or were not college students in any US college or university were excluded. Analyses were conducted using R (version 4.2.2; R Foundation for Statistical Computing).

RESULTS: Of 185 respondents participated in the study, 25 (13.5.%) used emails from their schools, 51 (27.6%) used mainstream media, and 109 (58.9%) used social media and other sources to obtain information about COVID-19. Of the 109 participants who learned about the pandemic from social media, 91 (83.5%) were concerned; however, only 63% (32/51) and 60% (15/25) of the participants who sourced information from mainstream media and their schools’ email, respectively, were concerned. Further, the participants who received information from social media and other sources were about 3 times more likely to be concerned about COVID-19 than participants who received information from the university via email (P=.036; OR=3.07, 95% CI: 1.06-8.83)..

CONCLUSIONS: College students who received information from social media and other sources were more likely to be concerned about COVID-19 than students who received information from their school via emails.

PMID:38885019 | DOI:10.2196/51292

JAMA Netw Open. 2024 Jun 3;7(6):e2421285. doi: 10.1001/jamanetworkopen.2024.21285.

NO ABSTRACT

PMID:38884999 | DOI:10.1001/jamanetworkopen.2024.21285

JAMA Netw Open. 2024 Jun 3;7(6):e2417006. doi: 10.1001/jamanetworkopen.2024.17006.

ABSTRACT

IMPORTANCE: Long-acting injectable antipsychotics (LAIs) can help decrease the rate of nonadherence to medications in patients with schizophrenia, but these drugs are underutilized in clinical practice, especially in Asian countries. One strategy for the early prescription of LAIs is to administer the drugs during patients’ first admission, when they have more time to absorb medication-related knowledge.

OBJECTIVE: To estimate the prevalence of and risk factors for in-hospital use of LAIs among first-admission patients with schizophrenia in Taiwan and to examine the association of early discontinuation with readmission risk among patients receiving LAIs.

DESIGN, SETTING, AND PARTICIPANTS: This cohort study included data from a claims database for patients with a first admission for schizophrenia at psychiatric wards in Taiwan from 2004 to 2017. Eligible patients were diagnosed with schizophrenia or schizoaffective disorder at discharge and aged between 15 and 64 years. Data analysis was performed from April to September 2022.

EXPOSURE: In-hospital use of LAIs with or without early discontinuation.

MAIN OUTCOME AND MEASURES: Readmission for any psychotic disorder following discharge from first admission, with risk estimated via multivariable survival regression analysis, including the Cox proportional hazards (CPH) model and accelerated failure time (AFT) model.

RESULTS: Of the 56 211 patients with a first admission for schizophrenia (mean [SD] age, 38.1 [12.1] years; 29 387 men [52.3%]), 46 875 (83.4%) did not receive any LAIs during admission, 5665 (10.1%) received LAIs with early discontinuation, and 3671 (6.5%) received LAIs without early discontinuation. The prevalence of receiving LAIs increased by 4%, from 15.3% (3863 of 25 251 patients) to 19.3% (3013 of 15 608 patients) between 2004-2008 and 2013-2017. After controlling for sex, year, prior antipsychotic use, age at first admission, and length of stay, the CPH regression analysis revealed that the readmission risk increased among patients receiving LAIs with early discontinuation (adjusted hazard ratio [aHR], 1.25; 95% CI, 1.21-1.30) but decreased among patients receiving LAIs without early discontinuation (aHR, 0.88; 95% CI, 0.84-0.92) compared with patients not receiving LAIs. Results remained similar for the AFT model.

CONCLUSIONS AND RELEVANCE: The incidence of in-hospital use of LAIs among patients with a first admission for schizophrenia has remained low. In this study, early discontinuation of LAIs was associated with readmission risk-specifically, early discontinuation with a higher risk while the lack of early discontinuation with a lower risk compared with treatment with oral antipsychotics alone-which suggests our results have implications for improving the efficacy of LAI administration among patients with a first admission for schizophrenia.

PMID:38884998 | DOI:10.1001/jamanetworkopen.2024.17006

JAMA Netw Open. 2024 Jun 3;7(6):e2417300. doi: 10.1001/jamanetworkopen.2024.17300.

ABSTRACT

IMPORTANCE: Medicare beneficiaries with functional disabilities often require more medical care, leading to substantial financial hardship. However, the precise magnitude and sources of this hardship remain unknown.

OBJECTIVES: To quantify the financial burden from health care expenses by functional disability levels among Medicare beneficiaries.

DESIGN, SETTING, AND PARTICIPANTS: This cross-sectional study used data, including demographic and socioeconomic characteristics, health status, and health care use, from a nationally representative sample of Medicare beneficiaries from the 2013 to 2021 Medical Expenditure Panel Survey. Functional disability was measured using 6 questions and categorized into 3 levels: none (no difficulties), moderate (1-2 difficulties), and severe (≥3 difficulties). Data were analyzed from December 2023 to March 2024.

MAIN OUTCOMES AND MEASURES: Financial hardship from health care expenses was assessed using objective measures (annual out-of-pocket spending, high financial burden [out-of-pocket spending exceeding 20% of income], and catastrophic financial burden [out-of-pocket spending exceeding 40% of income]) and subjective measures (difficulty paying medical bills and paying medical bills over time). We applied weights to produce results representative of national estimates.

RESULTS: The sample included 31 952 Medicare beneficiaries (mean [SD] age, 71.1 [9.7] years; 54.6% female). In weighted analyses, severe functional disability was associated with a significantly higher financial burden from health care expenses, with out-of-pocket spending reaching $2137 (95% CI, $1943-$2330) annually. This exceeded out-of-pocket spending for those without functional disability by nearly $700 per year ($1468 [95% CI, $1311-$1625]) and for those with moderate functional disability by almost $500 per year ($1673 [95% CI, $1620-$1725]). The primary factors that played a role in this difference were home health care ($399 [95% CI, $145-$651]) and equipment and supplies ($304 [95% CI, $278-$330]). Beneficiaries with severe functional disability experienced significantly higher rates of both high and catastrophic financial burden than those without disability and those with moderate disability (13.2% [12.2%-14.1%] vs 9.1% [95% CI, 8.6%-9.5%] and 9.4% [95% CI, 9.1%-9.7%] for high financial burden, respectively, and 8.9% [95% CI, 7.8%-10.1%] vs 6.4% [95% CI, 6.1%-6.8%] and 6.0% [95% CI, 5.6%-6.4%] for catastrophic financial burden, respectively). Similar associations were observed in subjective financial hardship. For example, 11.8% (95% CI, 10.3%-13.3%) of those with severe functional disability experienced problems paying medical bills, compared with 7.7% (95% CI, 7.6%-7.9%) and 9.3% (95% CI, 9.0%-9.6%) of those without functional disability and those with moderate functional disability, respectively. Notably, there were no significant differences in financial hardship among those with Medicaid based on functional disability levels.

CONCLUSIONS AND RELEVANCE: In this cross-sectional study of Medicare beneficiaries, those with severe functional disability levels experienced a disproportionate burden from health care costs. However, Medicaid played a pivotal role in reducing the financial strain. Policymakers should explore interventions that effectively relieve the financial burden of health care in this vulnerable population.

PMID:38884997 | DOI:10.1001/jamanetworkopen.2024.17300

JAMA Netw Open. 2024 Jun 3;7(6):e2417319. doi: 10.1001/jamanetworkopen.2024.17319.

ABSTRACT

IMPORTANCE: Although children with asthma are often successfully treated by primary care clinicians, outpatient specialist care is recommended for those with poorly controlled disease. Little is known about differences in specialist use for asthma among children with Medicaid vs private insurance.

OBJECTIVE: To examine differences among children with asthma regarding receipt of asthma specialist care by insurance type.

DESIGN, SETTING, AND PARTICIPANTS: In this cross-sectional study using data from the Massachusetts All Payer Claims Database (APCD) between 2014 to 2020, children with asthma were identified and differences in receipt of outpatient specialist care by whether their insurance was public (Medicaid and the Children’s Health Insurance Program) or private were examined. Eligible participants included children with asthma in 2015 to 2020 aged 2 to 17 years. Data analysis was conducted from January 2023 to April 2024.

EXPOSURE: Medicaid vs private insurance.

MAIN OUTCOMES AND MEASURES: The primary outcome was receipt of specialist care (any outpatient visit with a pulmonology, allergy and immunology, or otolaryngology physician). Multivariable logistic regression models estimated differences in receipt of specialist care by insurance type accounting for child and area characteristics including demographics, health status, persistent asthma, calendar year, and zip code characteristics. Additional analyses examined if the associations of specialist care with insurance type varied by asthma persistence and severity, and whether associations varied over time.

RESULTS: Among 198 101 unique children, there were 432 455 child-year observations (186 296 female [43.1%] and 246 159 male [56.9%]; 211 269 aged 5 to 11 years [48.9%]; 82 108 [19.0%] with persistent asthma) including 286 408 (66.2%) that were Medicaid insured and 146 047 (33.8%) that were privately insured. Although persistent asthma was more common among child-year observations with Medicaid vs private insurance (57 381 [20.0%] vs 24 727 [16.9%]), children with Medicaid were less likely to receive specialist care. Overall, 64 239 child-year observations (14.9%) received specialist care, with substantially lower rates for children with Medicaid vs private insurance (34 093 child-year observations [11.9%] vs 30 146 child-year observations [20.6%]). Regression-based estimates confirmed these disparities; children with Medicaid had 55% lower odds of receiving specialist care (adjusted odds ratio, 0.45; 95% CI, 0.43 to 0.47) and a regression-adjusted 9.7 percentage point (95% CI, -10.4 percentage points to -9.1 percentage points) lower rate of receipt of specialist care. Compared with children with private insurance, there was an additional 3.2 percentage point (95% CI, 2.0 percentage points to 4.4 percentage points) deficit for children with Medicaid with persistent asthma.

CONCLUSIONS AND RELEVANCE: In this cross-sectional study, children with Medicaid were less likely to receive specialist care, with the largest gaps among those with persistent asthma. These findings suggest that closing this care gap may be one approach to addressing ongoing disparities in asthma outcomes.

PMID:38884996 | DOI:10.1001/jamanetworkopen.2024.17319

JAMA Netw Open. 2024 Jun 3;7(6):e2417397. doi: 10.1001/jamanetworkopen.2024.17397.

ABSTRACT

IMPORTANCE: Many studies have reported that the interpregnancy interval (IPI) is a potential modifiable risk factor for adverse perinatal outcomes. However, the association between IPI after live birth and subsequent spontaneous abortion (SA) is unclear.

OBJECTIVE: To investigate the association of IPI after a healthy live birth and subsequent SA.

DESIGN, SETTING, AND PARTICIPANTS: This prospective cohort study used data from 180 921 women aged 20 to 49 years who had a single healthy live birth and planned for another pregnancy and who participated in the Chinese National Free Prepregnancy Checkups Project from January 1, 2010, to December 31, 2020. Statistical analysis was conducted from June 20 to October 5, 2023.

EXPOSURE: Interpregnancy interval, defined as the interval between the delivery date and conception of the subsequent pregnancy, was categorized as follows: less than 18 months, 18 to 23 months, 24 to 35 months, 36 to 59 months, and 60 months or longer.

MAIN OUTCOMES AND MEASURES: The main outcome was SA. Multivariable-adjusted odds ratios (ORs) were calculated by logistic regression models to examine the association between IPI and the risk of SA. Dose-response associations were evaluated by restricted cubic splines.

RESULTS: The analyses included 180 921 multiparous women (mean [SD] age at current pregnancy, 26.3 [2.8] years); 4380 SA events (2.4% of all participants) were recorded. A J-shaped association between IPI levels and SA was identified. In the fully adjusted model, compared with IPIs of 18 to 23 months, both short (<18 months) and long (≥36 months) IPIs showed an increased risk of SA (IPIs of <18 months: OR, 1.15 [95% CI, 1.04-1.27]; IPIs of 36-59 months: OR, 1.28 [95% CI, 1.15-1.43]; IPIs of ≥60 months: OR, 2.13 [95% CI, 1.78-2.56]). Results of the subgroup analysis by mode of previous delivery were consistent with the main analysis.

CONCLUSIONS AND RELEVANCE: This cohort study of multiparous women suggests that an IPI of shorter than 18 months or an IPI of 36 months or longer after a healthy live birth was associated with an increased risk of subsequent SA. The findings are valuable to make a rational prepregnancy plan and may facilitate the prevention of SA and improvement in neonatal outcomes.

PMID:38884995 | DOI:10.1001/jamanetworkopen.2024.17397

JAMA Intern Med. 2024 Jun 17. doi: 10.1001/jamainternmed.2024.1822. Online ahead of print.

ABSTRACT

IMPORTANCE: Little is known about the relative effectiveness of nicotine-containing electronic cigarettes (ECs) compared with varenicline as smoking cessation aids.

OBJECTIVE: To determine the relative effectiveness of ECs in smoking cessation.

DESIGN, SETTING, AND PARTICIPANTS: This randomized placebo-controlled single-center trial was conducted in northern Finland. Participants aged 25 to 75 years who smoked daily and had volunteered to quit smoking were recruited from August 1, 2018, to February 20, 2020, via local media. The trial included 52 weeks of follow-up. All data analyses were conducted from September 1, 2022, to January 15, 2024. The participants, study nurses, and researchers were masked to group assignment.

INTERVENTION: The participants were assigned by block randomization to receive 18 mg/mL of nicotine-containing ECs together with placebo tablets, varenicline with standard dosing together with nicotine-free ECs, or placebo tablets together with nicotine-free ECs, all combined with a motivational interview, with the intervention phase lasting for 12 weeks.

MAIN OUTCOME AND MEASURE: The primary outcome was self-reported 7-day conventional cigarette smoking abstinence as confirmed by the exhaled carbon monoxide level on week 26. The analysis followed the intent-to-treat principle.

RESULTS: Of the 561 recruited participants, 458 (81.6%) eligible participants (257 women [56%]; 201 men [44%]; mean [SD] age, 51 [11.6] years) were randomized. The primary outcome occurred in 61 of 152 participants (40.4%) in the EC group, 67 of 153 (43.8%) in the varenicline group, and 30 of 153 (19.7%) in the placebo group (P < .001). In the pairwise comparison, placebo differed statistically significantly from ECs (risk difference [RD], 20.7%; 95% CI, 10.4-30.4; P < .001) and varenicline (RD, 24.1%; 95% CI, 13.7-33.7; P < .001), but the difference was statistically insignificant between ECs and varenicline (RD, 3.4%; 95% CI, -7.6 to 14.3; P = .56). No serious adverse events were reported.

CONCLUSIONS: This randomized clinical trial found that varenicline and nicotine-containing ECs were both effective in helping individuals in quitting smoking conventional cigarettes for up to 6 months.

TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT03235505.

PMID:38884987 | DOI:10.1001/jamainternmed.2024.1822

Health Psychol. 2024 Jun 17. doi: 10.1037/hea0001349. Online ahead of print.

ABSTRACT

OBJECTIVES: Adverse childhood experiences (ACEs) have been linked to adulthood chronic diseases, but there is little research examining the mechanisms underlying this association. We tested pathways from ACEs to adult disease mediated via risk factors of depression, smoking, and body mass index.

METHOD: Prospective data from adults 18 to 74 years old from the Hispanic Community Health Study/Study of Latinos and Sociocultural Ancillary Study were used. Retrospectively reported ACEs and hypothesized mediators were measured at Visit 1 (2008-2011). Outcomes of disease prevalence were assessed at Visit 2, approximately 6 years later. The analytic sample includes 5,230 Hispanic/Latino participants with ACE data. Statistical mediation was examined using structural equation modeling on cardiometabolic and pulmonary disease prevalence and reported probit regression coefficients with 95% confidence intervals (CIs).

RESULTS: We found a significant association between ACEs and the prevalence of asthma/chronic obstructive pulmonary disorder (standardized β = .07, 95% CI [0.02, 0.12]). In the mediational model, the direct association was nonsignificant (β = .02, 95% CI [-0.04, 0.07]) but was mediated by depressive symptoms (β = .03, 95% CI [0.02, 0.04]). There were no associations between ACEs and the prevalence of diabetes and self-reported coronary heart disease or cerebrovascular disease. However, a small indirect effect was identified via depressive symptoms and coronary heart disease (β = .02, 95% CI [0.01, 0.03]).

CONCLUSION: In this diverse Hispanic/Latino sample, depressive symptoms were found to be a pathway linking ACEs to self-reported cardiopulmonary diseases, although the effects were of small magnitude. Future work should replicate pathways, confirm the magnitude of effects, and examine cultural moderators that may dampen expected associations. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

PMID:38884976 | DOI:10.1037/hea0001349