83,737 research outputs found
Patient-Reported Outcomes Measurement Information System physical function correlates with Toronto Extremity Salvage Score in an orthopaedic oncology population
Background: The National Institute of Health\u27s Patient-Reported Outcomes Measurement Information System (PROMIS) uses computerised-adaptive testing to reduce survey burden and improve sensitivity. PROMIS is being used across medical and surgical disciplines but has not been studied in orthopaedic oncology.
Questions/purposes: The aim of the study was to compare PROMIS measures with upper extremity (UE) and lower extremity (LE) Toronto Extremity Salvage Score (TESS) by assessing the following: (1) responder burden, (2) correlation between scores and (3) floor/ceiling effects.
Patients and methods: This cross-sectional trial analysed all 97 adult patients treated surgically for a bone or soft tissue tumour at a tertiary institution between November 2015 and March 2016. TESS (UE or LE) and PROMIS (Physical Function, Pain Interference and Depression) surveys were administered preoperatively. Pearson correlations between each PROMIS domain and TESS were calculated, as were floor/ceiling effects of each outcome measure.
Results: (1) Completion of three PROMIS questionnaires required a mean total of 16.8 (+/- 5.8 standard deviation) questions, compared with 31 and 32 questions for the LE and UE TESS questionnaires, respectively. (2) The PROMIS Physical Function scores demonstrated a strong positive correlation with the LE TESS (r = 0.84; 95% confidence interval [CI], 0.72-0.91; p \u3c 0.001) and moderate positive correlation with the UE TESS (r = 0.64; 95% CI, 0.34-0.83; p = 0.055). The PROMIS Depression scores demonstrated a weak negative correlation with both the LE TESS (r = -0.38; 95% CI, -0.61 to -0.10; p = 0.010) and with UE TESS (r = -0.38; 95% CI, -0.67 to -0.01; p = 0.055). The PROMIS Pain Interference scores demonstrated a strong negative correlation with the LE TESS (r = -0.71; 95% CI, -0.83 to -0.52; p \u3c 0.001) and a moderate negative correlation with the UE TESS (r = -0.62; 95% CI, -0.81 to -0.30; p = 0.001). (3) The UE TESS had a range of scores from 16 to 100 with a 27% ceiling effect and no floor effect, and the LE TESS had a range from 10 to 98 with no floor or ceiling effect. There was no floor or ceiling effect for any PROMIS measures.
Conclusions: In an orthopaedic oncology population, the PROMIS Physical Function and Pain Interference scores correlate with the TESS and have the benefit of reduced survey burden and ceiling effect. The PROMIS Depression scores may provide additional information regarding patient outcomes not captured by the TESS.
Level of Evidence: Level III.
The translational potential of this article: Patient reported outcome measures asses patients\u27 symptoms, function and health-related quality of life and are designed to capture more clinical information than can be gathered by objective medial testing alone. As reimbursements and the understanding of patient outcomes are becoming tied to performance on PROMIS measures, it is an important step to establish how PROMIS measures correlate and compare to traditional legacy measures
A Revised Exoplanet Yield from the Transiting Exoplanet Survey Satellite (TESS)
The Transiting Exoplanet Survey Satellite (TESS) has a goal of detecting
small planets orbiting stars bright enough for mass determination via
ground-based radial velocity observations. Here we present estimates of how
many exoplanets the TESS mission will detect, physical properties of the
detected planets, and the properties of the stars that those planets orbit.
This work uses stars drawn from the TESS Input Catalog Candidate Target List
and revises yields from prior studies that were based on Galactic models. We
modeled the TESS observing strategy to select approximately 200,000 stars at
2-minute cadence, while the remaining stars are observed at 30-min cadence in
full-frame image data. We placed zero or more planets in orbit around each
star, with physical properties following measured exoplanet occurrence rates,
and used the TESS noise model to predict the derived properties of the detected
exoplanets. In the TESS 2-minute cadence mode we estimate that TESS will find
1250+/-70 exoplanets (90% confidence), including 250 smaller than 2
Earth-radii. Furthermore, we predict an additional 3100 planets will be found
in full-frame image data orbiting bright dwarf stars and more than 10,000
around fainter stars. We predict that TESS will find 500 planets orbiting
M-dwarfs, but the majority of planets will orbit stars larger than the Sun. Our
simulated sample of planets contains hundreds of small planets amenable to
radial velocity follow-up, potentially more than tripling the number of planets
smaller than 4 Earth-radii with mass measurements. This sample of simulated
planets is available for use in planning follow-up observations and analyses.Comment: Accepted for publication in ApJS. Table 2 is available in
machine-readable format from https://doi.org/10.6084/m9.figshare.613767
Hardy and God: Tess of the D\u27Urberville\u27s Role as the Ultimate Pawn
Thomas Hardy\u27s Tess of the D \u27Urbervilles has multiple competing claims which are difficult to reconcile within the schools ofhist0l1cal, feminist, or classical criticism. A better way to approach the novel is to look at Tess as a pawn within Hardy\u27s own struggle with God. Hardy constructs God as the author of the multiple systems which lead to Tess\u27 final doom: a flawed genetic line, a flawed sexual double standard, and a flawed system of justice. Tess, in Hardy\u27s mind, becomes the victim of a God who is akin to the deity of Greek playwright Aeschylus\u27 Prometheus Bound, rather than the merciful and loving Christian God. This victimization justifies Hardy\u27s assertion that Tess is a pure woman even though society holds her responsible for multiple sins
eleanor: An open-source tool for extracting light curves from the TESS Full-Frame Images
During its two year prime mission the Transiting Exoplanet Survey Satellite
(TESS) will perform a time-series photometric survey covering over 80% of the
sky. This survey comprises observations of 26 24 x 96 degree sectors that are
each monitored continuously for approximately 27 days. The main goal of TESS is
to find transiting planets around 200,000 pre-selected stars for which fixed
aperture photometry is recorded every two minutes. However, TESS is also
recording and delivering Full-Frame Images (FFIs) of each detector at a 30
minute cadence. We have created an open-source tool, eleanor, to produce light
curves for objects in the TESS FFIs. Here, we describe the methods used in
eleanor to produce light curves that are optimized for planet searches. The
tool performs background subtraction, aperture and PSF photometry,
decorrelation of instrument systematics, and cotrending using principal
component analysis. We recover known transiting exoplanets in the FFIs to
validate the pipeline and perform a limited search for new planet candidates in
Sector 1. Our tests indicate that eleanor produces light curves with
significantly less scatter than other tools that have been used in the
literature. Cadence-stacked images, and raw and detrended eleanor light curves
for each analyzed star will be hosted on MAST, with planet candidates on
ExoFOP-TESS as Community TESS Objects of Interest (CTOIs). This work confirms
the promise that the TESS FFIs will enable the detection of thousands of new
exoplanets and a broad range of time domain astrophysics.Comment: 21 pages, 13 figures, 2 tables, Accepted to PAS
TESS Discovery of an ultra-short-period planet around the nearby M dwarf LHS 3844
Data from the newly-commissioned \textit{Transiting Exoplanet Survey
Satellite} (TESS) has revealed a "hot Earth" around LHS 3844, an M dwarf
located 15 pc away. The planet has a radius of and
orbits the star every 11 hours. Although the existence of an atmosphere around
such a strongly irradiated planet is questionable, the star is bright enough
(, ) for this possibility to be investigated with transit and
occultation spectroscopy. The star's brightness and the planet's short period
will also facilitate the measurement of the planet's mass through Doppler
spectroscopy.Comment: 10 pages, 4 figures. Submitted to ApJ Letters. This letter makes use
of the TESS Alert data, which is currently in a beta test phase, using data
from the pipelines at the TESS Science Office and at the TESS Science
Processing Operations Cente
A Catalog of Cool Dwarf Targets for the Transiting Exoplanet Survey Satellite
We present a catalog of cool dwarf targets (, ) and their stellar properties for the upcoming Transiting Exoplanet
Survey Satellite (TESS), for the purpose of determining which cool dwarfs
should be observed using two-minute observations. TESS has the opportunity to
search tens of thousands of nearby, cool, late K and M-type dwarfs for
transiting exoplanets, an order of magnitude more than current or previous
transiting exoplanet surveys, such as {\it Kepler}, K2 and ground-based
programs. This necessitates a new approach to choosing cool dwarf targets. Cool
dwarfs were chosen by collating parallax and proper motion catalogs from the
literature and subjecting them to a variety of selection criteria. We calculate
stellar parameters and TESS magnitudes using the best possible relations from
the literature while maintaining uniformity of methods for the sake of
reproducibility. We estimate the expected planet yield from TESS observations
using statistical results from the Kepler Mission, and use these results to
choose the best targets for two-minute observations, optimizing for small
planets for which masses can conceivably be measured using follow up Doppler
spectroscopy by current and future Doppler spectrometers. The catalog is
incorporated into the TESS Input Catalog and TESS Candidate Target List until a
more complete and accurate cool dwarf catalog identified by ESA's Gaia Mission
can be incorporated.Comment: Accepted to The Astronomical Journal. For the full catalog, please
contact the corresponding autho
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