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Nevin Manimala Statistics

Sex-Specific Neurodevelopmental Outcomes Among Offspring of Mothers With SARS-CoV-2 Infection During Pregnancy

JAMA Netw Open. 2023 Mar 1;6(3):e234415. doi: 10.1001/jamanetworkopen.2023.4415.

ABSTRACT

IMPORTANCE: Prior studies using large registries have suggested a modest increase in risk for neurodevelopmental diagnoses among children of mothers with immune activation during pregnancy, and such risk may be sex-specific.

OBJECTIVE: To determine whether in utero exposure to SARS-CoV-2 is associated with sex-specific risk for neurodevelopmental disorders up to 18 months after birth, compared with unexposed offspring born during or prior to the COVID-19 pandemic period.

DESIGN, SETTING, AND PARTICIPANTS: This retrospective cohort study included the live offspring of all mothers who delivered between January 1 and December 31, 2018 (born and followed up before the COVID-19 pandemic), between March 1 and December 31, 2019 (born before and followed up during the COVID-19 pandemic), and between March 1, 2020, and May 31, 2021 (born and followed up during the COVID-19 pandemic). Offspring were born at any of 8 hospitals across 2 health systems in Massachusetts.

EXPOSURES: Polymerase chain reaction evidence of maternal SARS-CoV-2 infection during pregnancy.

MAIN OUTCOMES AND MEASURES: Electronic health record documentation of International Statistical Classification of Diseases and Related Health Problems, Tenth Revision diagnostic codes corresponding to neurodevelopmental disorders.

RESULTS: The COVID-19 pandemic cohort included 18 355 live births (9399 boys [51.2%]), including 883 (4.8%) with maternal SARS-CoV-2 positivity during pregnancy. The cohort included 1809 Asian individuals (9.9%), 1635 Black individuals (8.9%), 12 718 White individuals (69.3%), and 1714 individuals (9.3%) who were of other race (American Indian or Alaska Native, Native Hawaiian or other Pacific Islander, more than 1 race); 2617 individuals (14.3%) were of Hispanic ethnicity. Mean maternal age was 33.0 (IQR, 30.0-36.0) years. In adjusted regression models accounting for race, ethnicity, insurance status, hospital type (academic center vs community), maternal age, and preterm status, maternal SARS-CoV-2 positivity was associated with a statistically significant elevation in risk for neurodevelopmental diagnoses at 12 months among male offspring (adjusted OR, 1.94 [95% CI 1.12-3.17]; P = .01) but not female offspring (adjusted OR, 0.89 [95% CI, 0.39-1.76]; P = .77). Similar effects were identified using matched analyses in lieu of regression. At 18 months, more modest effects were observed in male offspring (adjusted OR, 1.42 [95% CI, 0.92-2.11]; P = .10).

CONCLUSIONS AND RELEVANCE: In this cohort study of offspring with SARS-CoV-2 exposure in utero, such exposure was associated with greater magnitude of risk for neurodevelopmental diagnoses among male offspring at 12 months following birth. As with prior studies of maternal infection, substantially larger cohorts and longer follow-up will be required to reliably estimate or refute risk.

PMID:36951861 | DOI:10.1001/jamanetworkopen.2023.4415

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A Simple Guide to Effect Size Measures

JAMA Otolaryngol Head Neck Surg. 2023 Mar 23. doi: 10.1001/jamaoto.2023.0159. Online ahead of print.

ABSTRACT

IMPORTANCE: Effect size quantifies the magnitude of the difference or the strength of the association between variables. In clinical research it is important to calculate and report the effect size and the confidence interval (CI) because it is needed for sample size calculation, meaningful interpretation of results, and meta-analyses.

OBSERVATIONS: There are many different effect size measures that can be organized into 2 families or groups-d family and r family. The d family includes measures that quantify the differences between groups. The r family includes measures that quantify the strength of the association. Effect sizes that are presented in the same units as the characteristic being measured and compared are known as nonstandardized or simple effect sizes. The nonstandardized effect sizes have the advantage of being more informative, easier to interpret, and easier to evaluate in the light of clinical significance or practical relevance. Standardized effect sizes are unit-less and are helpful for combining and comparing effects of different outcome measures or across different studies (ie, meta-analysis).

CONCLUSIONS AND RELEVANCE: The choice of the correct effect size measure depends on the research question, study design, targeted audience, and the statistical assumptions being made. For a complete and meaningful interpretation of results from a clinical research study, the investigator should make clear the type of effect size being reported, its magnitude and direction, degree of uncertainty of the effect size estimate as presented by the CIs, and whether the results are compatible with a clinically meaningful effect.

PMID:36951858 | DOI:10.1001/jamaoto.2023.0159

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Serial dependence in emotion perception mirrors the autocorrelations in natural emotion statistics

J Vis. 2023 Mar 1;23(3):12. doi: 10.1167/jov.23.3.12.

ABSTRACT

A critical function of the human visual system is to track emotion accurately and continuously. However, visual information about emotion fluctuates over time. Ideally, the visual system should track these temporal fluctuations-these “natural emotion statistics” of the world-over time. This would balance the need to detect changes in emotion with the need to maintain the stability of visual scene representations. The visual system could promote this goal through serial dependence, which biases our perception of facial expressions toward those seen in the recent past and thus smooths our perception of the world. Here, we quantified the natural emotion statistics in videos by measuring the autocorrelations in emotional content present in films and movies. The results showed that observers’ perception of emotion was smoothed over ∼12 seconds or more, and this time-course closely followed the temporal fluctuations in visual information about emotion found in natural scenes. Moreover, the temporal and feature tuning of the perceptual smoothing was consistent with known properties of serial dependence. Our findings suggest that serial dependence is introduced in the perception of emotion to match the natural autocorrelations that are observed in the real world, an operation that could improve the efficiency, sensitivity, and stability of emotion perception.

PMID:36951852 | DOI:10.1167/jov.23.3.12

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Educating the Georgian Community on the Value and Benefits of Advanced Practice Nursing

AANA J. 2023 Apr;91(2):119-124.

ABSTRACT

Advanced practice nurses are not currently recognized in Georgia, the country intersecting Eastern Europe and Western Asia. With a critical nursing shortage and the brain-drain of graduate nurses in Georgia seeking higher pay and more respect in other countries, it is an opportune time to examine the potential for advancing nursing practice through education and professional mentorship. The aim of the study was two-fold. The first goal was to educate the local community about the profession of advanced practice nurse anesthesia and the benefits of advanced practice nursing in Georgia through a certified registered nurse anesthetist-led education session designed for a cohort of undergraduate biochemistry students. Second, a qualitative analysis identified the current state of nursing practice and directed the next steps toward nursing advancement, regulation, professionalism, access to quality care, and globally acceptable standards of practice. An education session held at San Diego State University Tbilisi, although not statistically significant, was successful in improving public knowledge. Qualitatively, the study established extreme enthusiasm for developing a nurse anesthesia program, licensure, regulation, standards of care, continuing education, and quality. In a country eager to advance, certified registered nurse anesthetists have the distinct opportunity of supporting Georgia’s movement toward westernized healthcare.

PMID:36951840

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Efficacy and Safety of Buprenorphine in a Single-Shot Peripheral Nerve Block: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

AANA J. 2023 Apr;91(2):93-105.

ABSTRACT

The purpose of this study was to evaluate the safety and efficacy of buprenorphine compared with placebo in prolonging the duration of analgesia in single-injection peripheral nerve block. The systematic review and meta-analysis were conducted following the PRISMA statement and Review Manager was used for meta-analysis. Outcomes were calculated using the mean difference (MD) with 95% confidence interval (CI) for continuous data. For dichotomous outcomes, effect sizes were estimated by calculating pooled risk ratio (RR) with 95% CI. Statistical heterogeneity was estimated by the I2 statistic. Compared with placebo, buprenorphine prolonged the duration of analgesia by an average of 8 hours (MD, 8.01; 95% CI, 6.79 to 9.24; P < .00001). The cumulative pain scores within 24 hours (MD, -0.8; 95% CI, -1.21 to -0.40; P < .0001) and the 24-hour opioid consumption (MD, -5.56; 95% CI, -10.60 to -0.52; P = .03) after surgery was lower with buprenorphine group. Conversely, buprenorphine increased the incidence of postoperative nausea and vomiting (PONV) (RR, 1.67; 95% CI, 1.16 to 2.39; P = .006). Buprenorphine is effective in prolonging analgesia, decreasing pain scores and opioid consumption, however, it increases the risk of PONV.

PMID:36951837

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Pulsed Oral Azithromycin vs 6-Week Oral Doxycycline for Moderate to Severe Meibomian Gland Dysfunction: A Randomized Clinical Trial

JAMA Ophthalmol. 2023 Mar 23. doi: 10.1001/jamaophthalmol.2023.0302. Online ahead of print.

ABSTRACT

IMPORTANCE: The treatment of moderate to severe meibomian gland dysfunction (MGD) with oral doxycycline requires a 6-week course of treatment and has frequent adverse effects (AEs), which may be associated with poor compliance.

OBJECTIVE: To determine if the AEs of a 3-week course of oral azithromycin were equivalent to the AEs of a 6-week course of oral doxycycline.

DESIGN, SETTING, AND PARTICIPANTS: This double-masked randomized clinical trial was conducted at a referral center in Thailand from September 2018 to May 2022. Participants with moderate to severe MGD judged unresponsive to conservative management were included.

INTERVENTIONS: Patients were randomized 1:1 to receive oral azithromycin (1 g once per week for 3 weeks) or oral doxycycline (200 mg daily for 6 weeks).

MAIN OUTCOMES AND MEASURES: After initiating therapy, the study team assessed the total MGD score and Ocular Surface Disease Index (OSDI) score at the initial visit, at 6 weeks, and at 8 weeks, and assessed AEs at 6 weeks and 8 weeks. The prespecified equivalence margins for MGD score and OSDI score were set at ±2 and ±9, respectively.

RESULTS: A total of 137 eyes from 137 patients were randomized into groups, 68 eyes in the azithromycin group and 69 eyes in the doxycycline group (female, 66.4%; mean age, 62.0 [SD, 15.1] years). The adjusted mean difference of total MGD scores between groups at week 6 and week 8 were -0.33 (95% CI, -1.70 to 1.03; P for equivalence = .01) and 0.13 (95% CI, -1.59 to 1.84; P for equivalence = .02), respectively. The adjusted mean difference of OSDI between groups score at week 6 and week 8 was -1.20 (95% CI, -5.31 to 2.91; P for equivalence < .001) and -1.59 (95% CI, -5.73 to 2.55; P for equivalence < .001), respectively. In addition, patients treated with azithromycin had fewer gastrointestinal AEs (4.4% vs 15.9%; risk difference, 11.5%; 95% CI 1.6%-21.4%; P = .03).

CONCLUSIONS AND RELEVANCE: These data support an equivalency of effects of azithromycin as compared with doxycycline for MGD score and OSDI score at both follow-up times. The study did not show more gastrointestinal AEs in the azithromycin group. The reduced dosing and potentially fewer gastrointestinal AEs associated with azithromycin support its use as an alternative to doxycycline for at least 6 weeks.

TRIAL REGISTRATION: ThaiClinicalTrials.org Identifier: TCTR20180810001.

PMID:36951835 | DOI:10.1001/jamaophthalmol.2023.0302

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Impact of an Expanded Definition of Family History on Outcomes of Active Surveillance for Prostate Cancer

J Urol. 2023 Mar 9:101097JU0000000000003396. doi: 10.1097/JU.0000000000003396. Online ahead of print.

ABSTRACT

PURPOSE: Despite family history being an established risk factor for prostate cancer, the role of a broader definition of family history inclusive of not just prostate cancer but other genetically related malignancies has not been investigated in the active surveillance population. Here, we evaluate the impact of an expanded definition of family history on active surveillance outcomes.

MATERIALS AND METHODS: Patients undergoing active surveillance for prostate cancer at Massachusetts General Hospital from 1997-2019 with detailed data available on family cancer history were identified. Primary outcome was biopsy progression-free survival, and secondary outcomes were treatment-free survival, adverse pathological features at prostatectomy, and biochemical recurrence after treatment. Statistical analyses were conducted using the Kaplan-Meier method and Cox regression.

RESULTS: Among 855 evaluable patients, 300 (35.1%) patients had any family history of prostate cancer, and 95 (11.1%) had a family history of related malignancies suggestive of a hereditary cancer syndrome (family history of hereditary cancer syndrome). Family history of prostate cancer alone was not associated with biopsy progression, whereas family history of hereditary cancer syndrome was associated with a significantly increased risk of biopsy progression (HR 1.43, 95%CI 1.01-2.02), independent of other known clinicopathological risk factors in multivariable analysis. Similarly, family history of hereditary cancer syndrome was associated with significantly lower treatment-free survival (HR 1.58, 95%CI 1.14-2.18) in multivariable analysis. No significant association was found between family history and adverse features on surgical pathology or biochemical recurrence.

CONCLUSIONS: An expanded family history suggestive of a hereditary cancer syndrome is an independent predictor of biopsy progression during active surveillance. Men with such a family history may still be offered active surveillance but should be counseled regarding the higher risk of disease progression.

PMID:36951811 | DOI:10.1097/JU.0000000000003396

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Tick-borne encephalitis virus IgG antibody surveillance: vaccination- and infection-induced seroprevalences, south-western Germany, 2021

Euro Surveill. 2023 Mar;28(12). doi: 10.2807/1560-7917.ES.2023.28.12.2200408.

ABSTRACT

BackgroundThe exact epidemiology of tick-borne encephalitis virus (TBEV) infections is unknown because many TBEV infections have an influenza-like or asymptomatic course. Surveillance data are based on patients with any (predominantly neurological) symptoms that prompted diagnostic testing. Infection- and vaccine-induced antibodies against TBEV can be distinguished using an NS1 IgG ELISA.AimIn a seroprevalence study we aimed to investigate TBEV antibody prevalence, incidences, manifestation indices and potential protection rates in a highly endemic district in south-western Germany.MethodsWe analysed 2,220 samples from healthy blood donors collected between May and September 2021. The reported number of TBEV infections was provided on a sub-district level by the local public health authorities. Blood samples were first screened using a TBEV IgG ELISA. In a second step, all positive samples were further analysed with a recently established NS1 IgG ELISA. The presence of specific antibodies against TBEV (excluding cross-reacting antibodies against other flaviviruses) was confirmed by testing screening-positive samples with a microneutralisation assay.ResultsOf 2,220 included samples, 1,257 (57%) tested positive by TBEV IgG ELISA and 125 tested positive for infection-induced TBEV NS1 antibodies, resulting in a TBEV NS1 IgG seroprevalence at 5.6% in our population. The yearly incidence based on the NS1 ELISA findings resulted in 283 cases per 100,000 inhabitants.ConclusionUsing the TBEV NS1 IgG assay, we confirmed a manifestation index of ca 2% and a high incidence of predominantly silent TBEV infections (> 250/100,000/year), which exceeds the incidence of notified cases (4.7/100,000/year) considerably.

PMID:36951789 | DOI:10.2807/1560-7917.ES.2023.28.12.2200408

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Process Development for a 1H-Indazole Synthesis Using an Intramolecular Ullmann-Type Reaction

J Org Chem. 2023 Mar 23. doi: 10.1021/acs.joc.2c02771. Online ahead of print.

ABSTRACT

Within the scope of developing a new route to an active pharmaceutical ingredient intermediate, we had need of a fluorinated indazole. Although an established route was in place, it was undesirable due to safety and selectivity concerns. A concise and improved route was developed to form the desired indazole, which takes advantage of an electronically directed metalation/formylation sequence followed by condensation with methyl hydrazine to form a hydrazone and culminates in a copper-catalyzed intramolecular Ullmann cyclization. The Ullmann reaction was plagued with difficulties ranging from poor reactivity to thermal hazard concerns, but use of high-throughput screening, statistical modeling, and an unusual isolation method for fine chemicals, safe and optimal conditions were found that produce high-purity isolated material in excellent yields at a laboratory scale.

PMID:36951763 | DOI:10.1021/acs.joc.2c02771

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Can high-sensitive troponin levels within the normal range predict positivity in treadmill test?

Coron Artery Dis. 2023 Mar 1. doi: 10.1097/MCA.0000000000001227. Online ahead of print.

ABSTRACT

BACKGROUND: This study aimed to determine whether a high level of high-sensitivity troponin T (hsTnT) predicts a positive treadmill test in patients with suspected stable ischemic heart disease (SIHD).

METHODS: In all, 366 patients with suspected SIHD were included in the study. We measured the serum hsTnT levels before the treadmill test. The treadmill test was performed according to the Bruce protocol.

RESULTS: Of the 366 patients, 97 had positive treadmill tests. The hsTnT levels were significantly higher in the positive group than in the negative group. In the binary logistic regression analysis, hsTnT, pretest probability, metabolic equivalents (METs), target heart rate (THR) percentage, and Duke treadmill score (DTS) were independent predictors of a positive treadmill test [hsTnT odds ratio (OR): 2.178, P < 0.001; pretest probability OR: 1.036, P = 0.007; METs OR: 0.755, P = 0.008; THR OR: 0.773, P < 0.001; DTS OR: 2.661, P = 0.012]. In the receiver operating characteristic (ROC) curve analysis, the area under the curve (AUC) value of the model with the combined parameters of hsTnT, pretest probability, METs, THR, and DTS was statistically significant in predicting a positive treadmill test [combined model AUC: 0.945 (0.922-0.968), P < 0.001].

CONCLUSIONS: In sum, high pretest hsTnT levels predicted a positive treadmill test in patients with suspected SIHD. Analysis of the hsTnT levels before the treadmill test can increase the sensitivity and specificity of the treadmill test. The methods for measuring hsTnT levels are cheap and easily accessible and can be used before the treadmill test in patients with suspected SIHD.

PMID:36951749 | DOI:10.1097/MCA.0000000000001227