We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.
To save content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about saving content to .
To save content items to your Kindle, first ensure no-reply@cambridge.org
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Adaptive management studies of invasive plants on non-agricultural lands typically employ an empirical approach based on designed field experiments that permit rigorous statistical analysis of results to quantify outcomes and assess the efficacy of management practices. When habitat restoration is the primary goal of a project, traditional plot-based study designs (e.g., the randomized complete-block design) are sometimes infeasible (this is often true in aquatic habitats) or inappropriate (e.g., when the goal is to assess effects of management practices on survival or resprouting of individual plants, such as trees or shrubs). Moreover, the assumptions of distribution-specific parametric statistical methods such as ANOVA often cannot be convincingly verified or are clearly untenable when properly assessed. For these reasons, it is worthwhile to be aware of alternative study designs that do not employ plots as experimental units and nonparametric statistical methods that require only weak distributional assumptions. The purpose of this paper is to review several of these alternative study designs and nonparametric statistical methods that we have found useful in our own studies of invasive aquatic and terrestrial plants. We motivate each statistical method by a research question it is well suited to answer, provide corresponding references to the statistical literature, and identify at least one R function that implements the method. In the Supplementary Material, we present additional technical information about the statistical methods, numerical examples with data, and a set of complete R programs to illustrate application of the statistical methods.
Patients diagnosed with attention-deficit hyperactivity disorder (ADHD) are at an elevated risk for suicide. No prior work has assessed the association between stimulant prescriptions and death by suicide in this population. This retrospective cohort study included Department of Veterans Affairs patients with an active ADHD diagnosis that received stimulant medications between 2016 and 2019. We found that months with active stimulant medication prescription was associated with decreased risk of suicide mortality compared with months without stimulant medication (odds ratio 0.57, 95% CI 0.36–0.88). Our results suggest that prescribing stimulant medications for patients diagnosed with ADHD is associated with decreased risk of suicide mortality.
Early in the COVID-19 pandemic, the World Health Organization stressed the importance of daily clinical assessments of infected patients, yet current approaches frequently consider cross-sectional timepoints, cumulative summary measures, or time-to-event analyses. Statistical methods are available that make use of the rich information content of longitudinal assessments. We demonstrate the use of a multistate transition model to assess the dynamic nature of COVID-19-associated critical illness using daily evaluations of COVID-19 patients from 9 academic hospitals. We describe the accessibility and utility of methods that consider the clinical trajectory of critically ill COVID-19 patients.
We sought to characterize patients’ preferences for the role of religious and spiritual (R&S) beliefs and practices during cancer treatment and describe the R&S resources desired by patients during the perioperative period.
Method
A cross-sectional survey was administered to individuals who underwent cancer-directed surgery. Data on demographics and R&S beliefs/preferences were collected and analyzed.
Results
Among 236 participants, average age was 58.8 (SD = 12.10) years; the majority were female (76.2%), white (94.1%), had a significant other or spouse (60.2%), and were breast cancer survivors (43.6%). Overall, more than one-half (55.9%) of individuals identified themselves as being religious, while others identified as only spiritual (27.9%) or neither (16.2%). Patients who identified as religious wanted R&S integrated into their care more often than patients who were only spiritual or neither (p < 0.001). Nearly half of participants (49.6%) wanted R&S resources when admitted to the hospital including the opportunity to speak with an R&S leader (e.g., rabbi; 72.1%), R&S texts (64.0%), and journaling materials (54.1%). Irrespective of R&S identification, 68.0% of patients did not want their physician to engage with them about R&S topics.
Significance of results
Access to R&S resources is important during cancer treatment, and incorporating R&S into cancer care may be especially important to patients that identify as religious. R&S needs should be addressed as part of the cancer care plan.
To identify the proportion of high-frequency users of the emergency department (ED) who have chronic pain.
Methods
We reviewed medical records of adult patients with ≥ 12 visits to a tertiary-care, academic hospital ED in Canada in 2012-2013. We collected the following demographics: 1) patient age and sex; 2) visit details – number of ED visits, inpatient admissions, length of inpatient admissions, diagnosis, and primary location of pain; 3) current and past substance abuse, mental health and medical conditions. Charts were reviewed independently by two reviewers. ED visits were classified as either “chronic pain” or “not chronic pain” related.
Results
We analyzed 4,646 visits for 247 patients, mean age was 47.2 years (standard deviation = 17.8), and 50.2% were female. This chart review study found 38% of high-frequency users presented with chronic pain to the ED and that women were overrepresented in this group (64.5%). All high-frequency users presented with co-morbidities and/or mental health concerns. High-frequency users with chronic pain had more ED visits than those without and 52.7% were prescribed an opioid. Chronic abdominal pain was the primary concern for 54.8% of high-frequency users presenting with chronic pain.
Conclusions
Chronic pain, specifically chronic abdominal pain, is a significant driver of ED visits among patients who frequently use the ED. Interventions to support high-frequency users with chronic pain that take into account the complexity of patient's physical and mental health needs will likely achieve better clinical outcomes and reduce ED utilization.
Item 9 of the Patient Health Questionnaire-9 (PHQ-9) queries about thoughts of death and self-harm, but not suicidality. Although it is sometimes used to assess suicide risk, most positive responses are not associated with suicidality. The PHQ-8, which omits Item 9, is thus increasingly used in research. We assessed equivalency of total score correlations and the diagnostic accuracy to detect major depression of the PHQ-8 and PHQ-9.
Methods
We conducted an individual patient data meta-analysis. We fit bivariate random-effects models to assess diagnostic accuracy.
Results
16 742 participants (2097 major depression cases) from 54 studies were included. The correlation between PHQ-8 and PHQ-9 scores was 0.996 (95% confidence interval 0.996 to 0.996). The standard cutoff score of 10 for the PHQ-9 maximized sensitivity + specificity for the PHQ-8 among studies that used a semi-structured diagnostic interview reference standard (N = 27). At cutoff 10, the PHQ-8 was less sensitive by 0.02 (−0.06 to 0.00) and more specific by 0.01 (0.00 to 0.01) among those studies (N = 27), with similar results for studies that used other types of interviews (N = 27). For all 54 primary studies combined, across all cutoffs, the PHQ-8 was less sensitive than the PHQ-9 by 0.00 to 0.05 (0.03 at cutoff 10), and specificity was within 0.01 for all cutoffs (0.00 to 0.01).
Conclusions
PHQ-8 and PHQ-9 total scores were similar. Sensitivity may be minimally reduced with the PHQ-8, but specificity is similar.
Varroa destructor mites (Acari: Varroidae) are harmful ectoparasites of Apis mellifera honey bees. Female foundresses of wax-capped pupal host cells and their daughters feed on host fluids from open wounds on the host's integument. Details of V. destructor mite nutrition are forthcoming, and little is known about the potential physical effects on hosts from mite feeding. Chemical analysis of waste excretions can infer details of animals’ nutrition. Here, chemical analysis by high-performance liquid chromatography/mass spectrometry (HPLC-MS/MS) of mite excretions showed that the purine content of V. destructor waste consists of guanine with traces of hypoxanthine. Traces of uric acid and caffeine were also detected. Concentrations of guanine attenuated over time and excretions collected from senescing mites did not contain detectable guanine. Non-reproducing individual female mites maintained in vitro, housed in gelatin capsules and provided a honey bee pupa, deposited an average of nearly 18 excretions daily, mostly on the host's integument rather than on the capsule wall. The weight and volume of excretions suggest mites can consume nearly a microlitre of host fluids each day. Compounded over 10 days, this together with open wounds, could lead to substantial water loss and stress to developing pupae.
Different diagnostic interviews are used as reference standards for major depression classification in research. Semi-structured interviews involve clinical judgement, whereas fully structured interviews are completely scripted. The Mini International Neuropsychiatric Interview (MINI), a brief fully structured interview, is also sometimes used. It is not known whether interview method is associated with probability of major depression classification.
Aims
To evaluate the association between interview method and odds of major depression classification, controlling for depressive symptom scores and participant characteristics.
Method
Data collected for an individual participant data meta-analysis of Patient Health Questionnaire-9 (PHQ-9) diagnostic accuracy were analysed and binomial generalised linear mixed models were fit.
Results
A total of 17 158 participants (2287 with major depression) from 57 primary studies were analysed. Among fully structured interviews, odds of major depression were higher for the MINI compared with the Composite International Diagnostic Interview (CIDI) (odds ratio (OR) = 2.10; 95% CI = 1.15–3.87). Compared with semi-structured interviews, fully structured interviews (MINI excluded) were non-significantly more likely to classify participants with low-level depressive symptoms (PHQ-9 scores ≤6) as having major depression (OR = 3.13; 95% CI = 0.98–10.00), similarly likely for moderate-level symptoms (PHQ-9 scores 7–15) (OR = 0.96; 95% CI = 0.56–1.66) and significantly less likely for high-level symptoms (PHQ-9 scores ≥16) (OR = 0.50; 95% CI = 0.26–0.97).
Conclusions
The MINI may identify more people as depressed than the CIDI, and semi-structured and fully structured interviews may not be interchangeable methods, but these results should be replicated.
Declaration of interest
Drs Jetté and Patten declare that they received a grant, outside the submitted work, from the Hotchkiss Brain Institute, which was jointly funded by the Institute and Pfizer. Pfizer was the original sponsor of the development of the PHQ-9, which is now in the public domain. Dr Chan is a steering committee member or consultant of Astra Zeneca, Bayer, Lilly, MSD and Pfizer. She has received sponsorships and honorarium for giving lectures and providing consultancy and her affiliated institution has received research grants from these companies. Dr Hegerl declares that within the past 3 years, he was an advisory board member for Lundbeck, Servier and Otsuka Pharma; a consultant for Bayer Pharma; and a speaker for Medice Arzneimittel, Novartis, and Roche Pharma, all outside the submitted work. Dr Inagaki declares that he has received grants from Novartis Pharma, lecture fees from Pfizer, Mochida, Shionogi, Sumitomo Dainippon Pharma, Daiichi-Sankyo, Meiji Seika and Takeda, and royalties from Nippon Hyoron Sha, Nanzando, Seiwa Shoten, Igaku-shoin and Technomics, all outside of the submitted work. Dr Yamada reports personal fees from Meiji Seika Pharma Co., Ltd., MSD K.K., Asahi Kasei Pharma Corporation, Seishin Shobo, Seiwa Shoten Co., Ltd., Igaku-shoin Ltd., Chugai Igakusha and Sentan Igakusha, all outside the submitted work. All other authors declare no competing interests. No funder had any role in the design and conduct of the study; collection, management, analysis and interpretation of the data; preparation, review or approval of the manuscript; and decision to submit the manuscript for publication.
The Protoplanetary Discussions conference—held in Edinburgh, UK, from 2016 March 7th–11th—included several open sessions led by participants. This paper reports on the discussions collectively concerned with the multi-physics modelling of protoplanetary discs, including the self-consistent calculation of gas and dust dynamics, radiative transfer, and chemistry. After a short introduction to each of these disciplines in isolation, we identify a series of burning questions and grand challenges associated with their continuing development and integration. We then discuss potential pathways towards solving these challenges, grouped by strategical, technical, and collaborative developments. This paper is not intended to be a review, but rather to motivate and direct future research and collaboration across typically distinct fields based on community-driven input, to encourage further progress in our understanding of circumstellar and protoplanetary discs.
Reinhold Niebuhr (1892-1971) possessed wide-ranging interests and a unique penchant for intellectual synthesis which understandably commended him to a far broader audience than is normally accorded theologians in this desacralized age. Niebuhr's orientation was theology and politics, and by his own admission, he saw himself working out of the context of Christian social ethics. Precisely because this was the framework of his labors, Niebuhr figured and continues to figure prominently among those persons whose interests center upon social, political, and ethical concerns so pertinent to the domain of law. Niebuhr neither fashioned himself a legal expert, nor did he conceive of himself as a legal theorist. Nonetheless, because of his standing in contemporary Protestantism, and because of his orientation as a theologian of social ethics, Niebuhr finds himself in the rather select circle of theologians who have something of note to say about the place of law in the affairs of humankind.
Political theorist Hans Morgenthau called Niebuhr “the greatest living political philosopher of America, perhaps the only creative political philosopher since Calhoun.” In this context, Gordon Harland makes the point that Niebuhr's “theological and political thought forms one consistent whole: and that there is a “vital organic relation between Niebuhr's social and political thought and the ultimate reaches of his theological reflections.” It is because Niebuhr spoke with conviction out of the Biblical tradition that he was concerned about the relationship of love to law. And precisely because he spoke convincingly as a political realist, he was concerned with the relationship between justice and law. But in speaking as both theologian and political realist, Niebuhr's approach to the problem of law was articulated in terms of the dialectical relationship between love and justice.
By the time the correspondence between Felix Frankfurter (1882-1965) and Reinhold Niebuhr (1892-1971) was underway, both men were well established in their respective careers. Frankfurter, coming from a prestigious post at the Harvard Law School, took the oath of office as Associate Justice of the Supreme Court on January 30, 1939. Niebuhr, occupying the Chair of Christian Ethics at Union Theological Seminary in New York, had recently returned from Edinburgh where he had delivered the highly regarded Gifford Lectures soon to be published in two significant volumes, The Nature and Destiny of Man (1941-1943).
During the period of their correspondence Frankfurter emerged as a major voice in American jurisprudence and came to fulfill the prognostication of Harold Ickes who once told Franklin Roosevelt; “If you appoint Frankfurter, his ability and learning are such that he will dominate the Supreme Court for fifteen or twenty years to come.” Niebuhr, meanwhile, experienced a meteoric rise to prominence in both theological and political circles and stood as one of the towering figures in American life. His contributions to American intellectual history were vast and varied, making him both the most important theologian in the American tradition since Jonathan Edwards, and, in the words of Hans Morgenthau, “the greatest living political philosopher of America, perhaps the only creative political philosopher since Calhoun.”
Offspring of mothers with depression are at heightened risk of psychiatric disorder. Many mothers with depression have comorbid psychopathology. How these co-occurring problems affect child outcomes has rarely been considered.
Aims
To consider whether the overall burden of co-occurring psychopathology in mothers with recurrent depression predicts new-onset psychopathology in offspring.
Method
Mothers with recurrent depression and their adolescent offspring (9–17 years at baseline) were assessed in 2007 and on two further occasions up to 2011. Mothers completed questionnaires assessing depression severity, anxiety, alcohol problems and antisocial behaviour. Psychiatric disorder in offspring was assessed using the Child and Adolescent Psychiatric Assessment.
Results
The number of co-occurring problems in mothers (0, 1 or 2+) predicted new-onset offspring disorder (odds ratio (OR) = 1.80, 95% CI 1.17–2.77, P = 0.007). Rates varied from 15.7 to 34.8% depending on the number of co-occurring clinical problems. This remained significant after controlling for maternal depression severity (OR = 1.73, 95% CI 1.03–2.89, P = 0.040).
Conclusions
The burden of co-occurring psychopathology among mothers with recurrent depression indexes increased risk of future onset of psychiatric disorder for offspring. This knowledge can be used in targeting preventive measures in children at high risk of psychiatric disorder.
Reinhold Niebuhr, the prominent American theologian, was one of the few religious figures who had a significant impact on the broader society outside the theological community in the United States during the twentieth century. Niebuhr's influence was most pronounced among those associated with historical studies and politics. This book presents Niebuhr in dialogue with seven individuals who each had a major influence on American life: the theologian Paul Tillich, philosopher/educator John Dewey, socialist Norman Thomas, historian Arthur Schlesinger, Jr, international political theorist Hans Morganthau, diplomat George Kennan and Supreme Court Justice Felix Frankfurter. Through a detailed examination of Niebuhr's interactions with these figures, Daniel F. Rice's study offers a survey of mid-twentieth-century theology, political thought and culture.
John Dewey was the most well-known and respected liberal voice in America throughout the early twentieth century. Born in 1859, the year Charles Darwin published The Origin of Species, Dewey was Niebuhr’s senior by a full generation. The American historian Henry Steele Commager accurately characterized Dewey as a “pioneer in educational reform, organizer of political parties, counselor to statesmen, champion of labor, of women’s rights, of peace, of civil liberties [and] interpreter of America abroad [having] illustrated in his own career how effective philosophy could be in that reconstruction of society which was his preoccupation and its responsibility.” However critical Niebuhr became of Dewey, he always admired and shared Dewey’s role as a public intellectual. Niebuhr saw Dewey as the preeminent American philosopher, and in his review of the book Living Philosophers: A Series of Intimate Credos, Niebuhr pointed out that among those mentioned only “John Dewey and Lewis Mumford both give themselves constructively to the social problem.” In his estimation of Dewey, what Niebuhr chose to emphasize was Dewey’s membership among that rare breed of philosophers willing to “descend from their ant-hill of scholastic hairsplitting to help the world of men regulate its common life and discipline its ambitions and ideals.”
Although the relationship between Niebuhr and Dewey was one of the most interesting in twentieth-century American intellectual history, the two men had little personal contact outside of their common involvement with various political activities during the late 1920s and 1930s. They did share political causes and occasional forums with the socialist Norman Thomas and were actively involved in support of Thomas’s presidential bid in 1932 – the same year Niebuhr himself was conducting a failed run for Congress from his own home district in New York. Both men were members of the League for Independent Political Action in company with University of Chicago economist and future United States Senator from Illinois Paul Douglas – an organization in which Dewey served as chairman for five years.
Reinhold Niebuhr met Norman Thomas when Niebuhr got involved in socialist politics after moving to New York City in 1928. His association with Thomas and The World Tomorrow staff began immediately by way of his joint appointment, financed by Sherwood Eddy, to a part-time teaching position at Union Theological Seminary and to an associate editing position at The World Tomorrow. As for what first prompted the social awareness resulting in his attraction to Thomas, Niebuhr informed us in his 1954 oral interview at Columbia University that his experiences as a pastor in Detroit with “raw politics” associated with Henry Ford are what sharpened his mind to “all the facts of life in regard to our industrial society.” He further recalled 1926 as the year when he “had come out with a socialistic answer to the problems of modern industrialism.”
Thomas had begun moving closer to accepting the general socialist critique of capitalism during the period of World War I. His embrace of socialism also grew out of experiences gained after graduating from Princeton University, first at the Spring Street Presbyterian Church in New York City in 1905, next as an assistant at Christ Church on West 36th Street in 1908, and then after his ordination in 1911 at the East Harlem Presbyterian Church. While a student at Union Theological Seminary, Thomas, like Niebuhr later, came under the influence of Walter Rauschenbusch, whose books Christianity and the Social Crisis and Christianizing the Social Order ignited social consciousness within Protestant religious circles. As Thomas recalled, however, his embrace of socialism came primarily as a matter of “events, not people and not books” – events relating to the “grotesque inequalities, conspicuous waste, gross exploitation, and unnecessary poverty all about me.”