Bioimpedance Spectroscopy Is a Valid and Reliable Measure of Edema Following Hand Burn Injury (Part 1—Method Validation)

2020 ◽  
Vol 41 (4) ◽  
pp. 780-787 ◽  
Author(s):  
Dale O Edwick ◽  
Dana A Hince ◽  
Jeremy M Rawlins ◽  
Fiona M Wood ◽  
Dale W Edgar
Keyword(s):  
Repeated Measures ◽  
Burn Injury ◽  
High Reliability ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Whole Body ◽  
Bioimpedance Spectroscopy ◽  
Water Displacement ◽  
Reliable Measure ◽  
Minimum Detectable Difference

Abstract The assessment of swelling following burn injury is complicated by the presence of wounds and dressings and due to patients experiencing significant pain and impaired movement. There remains a lack of sensitive objective measures for edema in patients presenting with hand burn injury. Bioimpedance spectroscopy (BIS) is a measure of body composition that has been demonstrated by our group to be reliable for measuring whole body and limb edema during resuscitation and to be sensitive to edema changes within healing wounds. The aim of this study was to determine the reliability and validity of BIS as a measure of edema following hand burn injury specifically. One hundred patients presenting with burn injury including a portion of a hand were recruited to this trial. Repeated measures of the hand were recorded using a novel application of BIS and in parallel with water displacement volumetry (WDV). The results were analyzed using mixed-effects regressions. Paired repeated measures were obtained for 195 hands, using four electrode configurations. BIS demonstrated high reliability in measuring hand BIS—Intraclass Correlation Coefficient 0.995 to 0.999 (95% CI 0.992–1.000) and sensitivity—Minimum Detectable Difference 0.74 to 3.86 Ω (0.09–0.48 Ω/cm). A strong correlation was shown with WDV, Pearson’s r = −0.831 to −0.798 (P < .001). BIS is a sensitive and reliable measure of edema following acute hand burn injury.

94 Bioimpedance Spectroscopy Is a Valid and Reliable Measure of Edema in Hand Burn Injury

2020 ◽  
Vol 41 (Supplement_1) ◽  
pp. S61-S62
Author(s):  
Dale O Edwick ◽  
Dana A Hince ◽  
Jeremy M Rawlins ◽  
Fiona M Wood ◽  
Dale W Edgar
Keyword(s):  
Repeated Measures ◽  
Burn Injury ◽  
Middle Finger ◽  
Whole Body ◽  
Electrode Position ◽  
Bioimpedance Spectroscopy ◽  
Reliable Measure ◽  
Dorsal Hand ◽  
Significant Difference ◽  
Distance Interaction

Abstract Introduction The assessment of swelling following burn injury is complicated by the presence of wounds and dressings, particularly as the patient cohort experience significant pain, impaired movement, and may require medications that result in modified behavior. Further, traditional measures of volume, such as water displacement volumetry (WDV) or circumferential limb measures may pose increased infection risk and pain due to contact with open wounds. Clinically, edema is most often assessed by noting loss of skin creases, palpation of areas of visible swelling, and loss of function, as there remains a lack of sensitive objective measures for edema in patients with hand burn injury. Bioimpedance spectroscopy (BIS) is a measure of body composition that has been demonstrated by our group to be reliable for measuring whole body and limb edema during resuscitation, and to be sensitive to local edema changes within healing wounds. The aim of this study was to determine the reliability and validity of BIS as a measure of edema following hand burn injury. Methods One hundred patients presenting with hand burn injury were recruited to this trial. Repeated volume measures of the hand were recorded using a novel application of BIS, and repeated using WDV. The results were analysed using multi-level mixed effects regressions. The use of BIS electrodes on the dorsum of the middle finger at the DIP and MCPJ levels, and dorsum of the wrist and forearm have been previously described for measuring lymphedema. Results Paired repeated measures were obtained for 195 hands. Alternate electrode positions on the palm of the middle finger and hand, and volar wrist and forearm, and a combination of palmar hand / dorsal forearm were assessed. There was no evidence of a significant difference between these electrode configurations and the previously described dorsal hand / forearm configuration (position x distance interaction, p=0.608–0.802). Dorsal hand / volar forearm configuration was significantly different (position x distance interaction, p=0.006) from the standard electrode position described. Comparison with WDV demonstrated a strong correlation (r=0.79; limits of agreement 198-460mL; bias 329mL). Reliability of BIS was determined by ICC: 0.9978–0.9999 (CI 0.9967–0.9999). Conclusions Compared to WDV, BIS is a valid and reliable measure of edema following acute hand burn injury. This study also confirmed the interchangeability of multiple BIS electrode positions. Applicability of Research to Practice BIS offers a real time measure of fluid (change) within the extracellular space, and therefore edema in patients with hand burn injury, while minimizing the risk of infection and increased pain in burns patients. The interchangeability of electrode positions provides clinicians with a number of flexible options to accommodate locations of hand burn wounds, thus allowing between patient comparisons.

Reliability and validity of short Beck Hopelessness Scale in psychological autopsy study among Chinese rural elderly

2019 ◽  
Vol 32 (4) ◽  
pp. 525-531
Author(s):  
Zhenyu Ma ◽  
Qiuping He ◽  
Guanghui Nie ◽  
Cunxian Jia ◽  
Liang Zhou
Keyword(s):  
Correlation Coefficient ◽  
High Reliability ◽  
Common Factor ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Rural Elderly ◽  
Cluster Sampling ◽  
Psychological Autopsy ◽  
Autopsy Study ◽  
Beck Hopelessness Scale

ABSTRACTBackground:Older adults represent the segment of population most exposed to the risk of suicide nearly everywhere in the world. Previous studies showed that hopelessness was an important risk factor for suicide.Aims:This study aimed to evaluate the reliability and validity of the four-item Beck Hopelessness Scale (BHS-4) in psychological autopsy study among Chinese rural elderly.Method:Two-stage stratified cluster sampling method was used to select research sites. Using case-control psychological autopsy study, face-to-face interviews were conducted to collected information.Results:A total of 242 elderly suicide deaths and 242 matched living comparisons were investigated, including 135 males and 107 females for each group. Intraclass Correlation Coefficients (ICC) of the controls were 0.682-0.713. The median score of BHS-4 among suicides was significantly higher than that among controls. The corrected correlation coefficient between items and total score were 0.184-0.723. Cronbach’s Alphas coefficient was 0.834. Only one common factor was precipitated by exploratory factor analysis and the cumulative variance contribution rates were 59.558% for suicides and 52.722% for living controls. The correlation coefficient between hopelessness and depression were 0.481 among suicide death and 0.617 among living controls.Conclusion:The information provided by the informants through psychological autopsy method had high reliability to reflect the actual situation of suicides and controls. BHS-4 has good reliability and validity among Chinese rural elderly suicides. It is suitable for psychological autopsy study among Chinese rural elderly.

scholarly journals Teleassessment of Gait and Gait Aids: Validity and Interrater Reliability

2020 ◽  
Vol 100 (4) ◽  
pp. 708-717
Author(s):  
Kavita Venkataraman ◽  
Kristopher Amis ◽  
Lawrence R Landerman ◽  
Kevin Caves ◽  
Gerald C Koh ◽  
...  
Keyword(s):  
Repeated Measures ◽  
Interrater Reliability ◽  
Video Quality ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Slow Motion ◽  
Frame Rate ◽  
Normal Speed ◽  
Lower Frame ◽  
Rehabilitation Needs

Abstract Background Gait and mobility aid assessments are important components of rehabilitation. Given the increasing use of telehealth to meet rehabilitation needs, it is important to examine the feasibility of such assessments within the constraints of telerehabilitation. Objective The objective of this study was to examine the reliability and validity of the Tinetti Performance-Oriented Mobility Assessment gait scale (POMA-G) and cane height assessment under various video and transmission settings to demonstrate the feasibility of teleassessment. Design This repeated-measures study compared the test performances of in-person, slow motion (SM) review, and normal-speed (NS) video ratings at various fixed frame rates (8, 15, and 30 frames per second) and bandwidth (128, 384, and 768 kB/s) configurations. Methods Overall bias, validity, and interrater reliability were assessed for in-person, SM video, and NS video ratings, with SM video rating as the gold standard, as well as for different frame rate and bandwidth configurations within NS videos. Results There was moderate to good interrater reliability for the POMA-G (intraclass correlation coefficient [ICC] = 0.66–0.77 across all configurations) and moderate validity for in-person (β = 0.62; 95% confidence interval [CI] = 0.37–0.87) and NS video (β = 0.74; 95% CI = 0.67–0.80) ratings compared with the SM video rating. For cane height, interrater reliability was good (ICC = 0.66–0.77), although it was significantly lower at the lowest frame rate (8 frames per second) (ICC = 0.66; 95% CI = 0.54–0.76) and bandwidth (128 kB/s) (ICC = 0.69; 95% CI = 0.57–0.78) configurations. Validity for cane height was good for both in-person (β = 0.80; 95% CI = 0.62–0.98) and NS video (β = 0.86; 95% CI = 0.81–0.90) ratings compared with SM video rating. Limitations Some lower frame rate and bandwidth configurations may limit the reliability of remote cane height assessments. Conclusions Teleassessment for POMA-G and cane height using typically available internet and video quality is feasible, valid, and reliable.

Evaluation of Stereo Acuity in Professional Baseball and LPGA Athletes Compared to Non-Athletes

2017 ◽  
pp. 34-42
Keyword(s):  
Convergent Validity ◽  
High Reliability ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Correlation Coefficients ◽  
Professional Women ◽  
Professional Baseball ◽  
Baseball Players ◽  
Intraclass Correlation Coefficients ◽  
Stereo Acuity

Purpose: To investigate stereo acuity of professional athletes in an open (baseball) and closed (golf) skilled sport compared to nonathletes using a new digitized version of the Titmus Stereo Test/Wirt Circles. Additionally, to examine the new test for reliability and validity. Methods: Participants included professional baseball players (PBP; n = 265) and professional women golfers (LPGA; n = 52), and nonathletes (n = 107). All participants were tested on the RightEye Fine Depth Perception (FDP) test and a subset (n = 20) was retested to determine reliability and internal consistency. A different subset (n = 81) was tested for validity comparing the Titmus Stereo Test/Wirt Circles to the RightEye FDP test. Cronbach’s Alpha, intraclass correlation coefficients (ICC) were examined for reliability and ANOVA was conducted to determine convergent validity as well as differences in stereo acuity between groups. Results: Results: The test was revealed to have high reliability and validity, therefore being a good measure of stereo acuity. Furthermore, significant differences (p<.001) between athletes and non-athletes were found. Both PBP and LPGA athletes were significantly different from non-athletes (p<.05). No differences were found between athlete groups. Conclusions: The RightEye FDP test is both reliable and valid and can therefore be used confidently as a measure of static stereo acuity. Elite athletes in open and closed skills show significantly better stereo acuity than non-athletes.

scholarly journals Effect of Sampling Frequency on Isometric Midthigh-Pull Kinetics

2019 ◽  
Vol 14 (4) ◽  
pp. 525-530 ◽  
Author(s):  
Thomas Dos’Santos ◽  
Paul A. Jones ◽  
Jonathan Kelly ◽  
John J. McMahon ◽  
Paul Comfort ◽  
...  
Keyword(s):  
Repeated Measures ◽  
High Reliability ◽  
Intraclass Correlation ◽  
Rugby League ◽  
Sampling Frequency ◽  
Peak Force ◽  
Specific Force ◽  
Skeletal Muscle Function ◽  
Force Time ◽  
Time Specific

Purpose: Skeletal-muscle function can be evaluated using force-times curves generated via the isometric midthigh pull (IMTP). Various sampling frequencies (500–1000 Hz) have been used for IMTP assessments; however, no research has investigated the influence of sampling frequency on IMTP kinetics. Therefore, the purpose of this study was to investigate the influence of sampling frequency on kinetic variables during the IMTP, including peak force, time-specific force values (100, 150, and 200 ms), and rate of force development (RFD) at 3 time bands (0–100, 0–150, 0–200 ms). Methods: Academy rugby league players (n = 30, age 17.5 ± 1.1 y, height 1.80 ± 0.06 m, mass 85.4 ± 10.3 kg) performed 3 IMTP trials on a force platform sampling at 2000 Hz, which was subsequently down-sampled to 1500, 1000, and 500 Hz for analysis. Results: Intraclass correlation coefficients (ICC) and coefficients of variation (CV) demonstrated high within-session reliability for all force and RFD variables across all sampling frequencies (ICC ≥ .80, CV ≤ 14.4%) except RFD 0–100 and 0–150, which demonstrated slightly greater levels of variance (CV = 18.0–24.1%). Repeated-measures analysis of variance revealed no significant differences (P > .05, Cohen d ≤ 0.0171) in kinetic variables between sampling frequencies. Overall, high reliability was observed across all sampling frequencies for peak force, time-specific force, and RFD 0- to 200-ms variables, with no significant differences (P > .05) for each kinetic variable across sampling frequencies. Conclusions: Practitioners and scientists may consider sampling as low as 500 Hz when measuring peak force, time-specific force values, and RFD at predetermined time bands during the IMTP for accurate and reliable data.

scholarly journals Reliability and Validity of Three Clinical Methods to Measure Lower Extremity Muscle Power

2020 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Mattie E. Pontiff ◽  
Li Li ◽  
Noelle G. Moreau
Keyword(s):  
Lower Extremity ◽  
Repeated Measures ◽  
Muscle Power ◽  
Intraclass Correlation ◽  
Force Plate ◽  
Reliability And Validity ◽  
Cross Sectional ◽  
Position Transducer ◽  
Lower Extremity Muscle ◽  
Highly Correlated

Background: Lower extremity muscle power is critical for daily activities and athletic performance in clinical populations. Objective: The purpose of this study was to determine the reliability and validity of 3 clinically feasible methods to measure lower extremity muscle power during a leg press. Methods: Ten of 26 subjects performed 2 sessions of 5 submaximal leg presses separated by 3-7 days in this repeated-measures cross-sectional design; the remaining performed 1 test session. Power was calculated independently for each method [simple video, linear position transducer, and accelerometer] and compared to the reference force plate. Test-retest reliability was evaluated using intraclass correlation coefficients (ICC). Pearson’s correlation coefficient (r), Bland-Altman plots with 95% limits of agreement (LOA), and mean bias percentages (%) were used to determine relative and absolute validity. Results: Power measures were reliable for all methods (ICC=.97-.99). All were highly correlated with the force plate (r=.96-.98). Mean bias was -0.8% (LOA: -16.57% to 14.98%) (video), -13.21% (LOA: -23.81% to -2.61%) (position transducer) compared to the force plate. Proportional bias was observed for accelerometry. Conclusion: All methods were reliable and highly correlated with the force plate. Only the video and position transducer demonstrated absolute validity. The position transducer was the most feasible method because of its simplicity and accuracy in measuring power.

Development of the self-administered Spanish version of the Health of the Nation Outcome Scales for Older Adults: HoNOS65+A

2010 ◽  
Vol 25 (3) ◽  
pp. 164-171 ◽  
Author(s):  
B. Ausín ◽  
M. Muñoz ◽  
E. Pérez-Santos
Keyword(s):  
Older Adults ◽  
Psychosocial Functioning ◽  
Discriminant Validity ◽  
High Reliability ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Correlation Coefficients ◽  
Criterion Validity ◽  
Spanish Version ◽  
Second Phase

AbstractObjectivesThe purpose of this study is to develop a self-administered version of the Health of the Nation Outcome Scales for Older Adults (HoNOS65+) in Spanish – the HoNOS65+A – and to study its reliability and validity.MethodsThere are two phases in the study: construction of the HoNOS65+A and the study of its psychometric properties. In the second phase, 179 users of 10 services for older people of Madrid were interviewed. They completed the HoNOS65+A, the Spanish version of the HoNOS65+, and other instruments that evaluate similar constructs. Reliability (internal consistency with the other-administered HoNOS65+, intraclass) and validity (concurrent, discriminant, and criterion validity) were analyzed.ResultsHigh reliability indexes (intraclass correlation coefficients) were found for all the scales (HoNOS65+ and HoNOS65+A), except for items 4 and 6. Moreover, the HoNOS65+A has satisfactory concurrent (except 4, 6, and 9) and discriminant validity (except for items 4 and 10). Considering all these data and some theoretical points the items 4 and 6 have eliminated from the scale. Upon eliminating items 4 and 6, the analysis of the reliability (Cronbach's Alpha) and criterion validity (discriminant function among autonomous and assisted people) presents positive values.ConclusionThe results indicate that the HoNOS65+A is a useful measure that does not assess a homogeneous area but instead different aspects of health and psychosocial functioning.

Reliability of electromyographic and force measures during prone isometric back extension in subjects with and without low back pain

2008 ◽  
Vol 33 (1) ◽  
pp. 52-60 ◽  
Author(s):  
Mark J. Pitcher ◽  
David G. Behm ◽  
Scott N. MacKinnon
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Repeated Measures ◽  
Muscle Activation ◽  
High Reliability ◽  
Intraclass Correlation ◽  
Erector Spinae ◽  
Emg Activity ◽  
Control Group ◽  
Low Back

Maximal voluntary isometric activations (MVIA) are frequently used as inputs for models attempting to predict muscle force and as normalization values in studies assessing muscle function. However, pain may adversely affect maximal muscle activation. The purpose of this study was to assess reliability of MVIA force and electromyographic (EMG) activity during prone isometric back extension in subjects with and without low back pain (LBP). A novel sub-maximal method using the percentages of the estimated mass of the head–arms–trunk (HAT) segment was also investigated. Repeated measures on 20 male volunteers divided into an LBP (n = 10) and a control group (n = 10) were made on 4 occasions. Force and EMG activity were recorded bilaterally from upper lumbar erector spinae (ULES), lower lumbar erector spinae (LLES), and biceps femoris (BF). Subjects exerted a maximal extension effort against a harness assembly that was attached to a force transducer. Submaximal exertions were also performed with an additional resistance of 100%, 110%, 120%, 130%, 140%, 150%, 160%, and 170% of HAT. Mean MVIA forces were significantly (p ≤ 0.05) lower in LBP vs. control. Intraclass correlation coefficients (ICC) for MVIA force, right and left ULES, and LLES EMG indicated high reliability in controls (R > 0.90), but were significantly less in LBP (R = 0.36–0.80). EMG of BF demonstrated excellent reliability across both groups (R > 0.90). The resistance at 100% HAT demonstrated the highest reliability for LBP patients, whereas higher percentages of HAT showed either similar or higher reliability for controls. Force output and back EMG activity are less reliable with LBP individuals and should be taken into consideration when testing.

scholarly journals Introducing Adam’s Scale of Posterior Stroke (ASPOS): A Novel Validated Tool to Assess and Predict Posterior Circulation Strokes

2021 ◽  
Vol 11 (4) ◽  
pp. 424
Author(s):  
Adam Wiśniewski ◽  
Karolina Filipska ◽  
Katarzyna Piec ◽  
Filip Jaskólski ◽  
Robert Ślusarz
Keyword(s):  
High Reliability ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Correlation Coefficients ◽  
Weighted Kappa ◽  
Clinical Problem ◽  
Posterior Circulation ◽  
Stroke Severity ◽  
Lower Accuracy ◽  
Good Internal Consistency

Background: Assessing the severity of posterior circulation strokes, due to the variety of symptoms, is a significant clinical problem. Current clinimetric scales show lower accuracy in the measurement of posterior stroke severity, compared with that of anterior strokes. The aim of the study was to design a validated tool, termed Adam’s Scale of Posterior Stroke (ASPOS), for better assessment and prediction of posterior stroke. Methods: This prospective, observational study involved 126 posterior circulation ischemic stroke subjects. Four researchers, previously trained in ASPOS, randomized the stroke severity using a novel tool and other appropriate stroke scales (The National Institute of Health Stroke Scale—NIHSS, modified Rankin Scale—mRS, Glasgow Coma Scale, Barthel Index, or Israeli Vertebrobasilar Stroke Scale—IVBSS) to assess the psychometric properties, reliability, and validity of ASPOS and investigate its predictive value. Results: ASPOS reached a Cronbach’s alpha coefficient of 0.7449, indicating good internal consistency. The Bland–Altman analysis showed a good coefficient of repeatability (CR) of 0.46, a 95% confidence interval (CI) of 0.41–0.53, and excellent intraclass correlation coefficients or weighted kappa values (>0.90), reflecting high reliability and reproducibility. Highly significant correlations with other scales confirmed the construct and predictive validity of ASPOS. A total ASPOS score of three points indicated a significantly increased probability of severe stroke based on the NIHSS, compared to a total ASPOS of 1–2 points (odds ratio (OR) 141; 95% CI: 6.72–2977.66; p = 0.0014). Conclusions: We developed a novel, valid, and reliable tool to assess posterior circulation strokes. This can contribute to a more comprehensive estimation of posterior stroke and, additionally, due to its predictive properties, it can be used to more accurately select candidates for specific treatments.

scholarly journals Reliability and Validity of Arm Volume Measurements for Assessment of Lymphedema

2006 ◽  
Vol 86 (2) ◽  
pp. 205-214 ◽  
Author(s):  
Richard Taylor ◽  
Upali W Jayasinghe ◽  
Louise Koelmeyer ◽  
Owen Ung ◽  
John Boyages
Keyword(s):  
Breast Cancer ◽  
High Reliability ◽  
Reliability And Validity ◽  
Cancer Surgery ◽  
Breast Cancer Surgery ◽  
Water Displacement ◽  
Anatomic Landmarks ◽  
Single Measure ◽  
Arm Lymphedema ◽  
Volume Measurements

Background and Purpose. Arm lymphedema following breast cancer surgery is a continuing problem. In this study, we assessed the reliability and validity of circumferential measurements and water displacement for measuring upper-limb volume. Subjects. Participants included subjects who had had breast cancer surgery, including axillary dissection—19 with and 22 without a diagnosis of arm lymphedema—and 25 control subjects. Methods. Two raters measured each subject by using circumferential tape measurements at specified distances from the fingertips and in relation to anatomic landmarks and by using water displacement. Interrater reliability was calculated by analysis of variance and multilevel modeling. Volumes from circumferential measurements were compared with those from water displacement by use of means and correlation coefficients, respectively. The standard error of measurement, minimum detectable change (MDC), and limits of agreement (LOA) for volumes also were calculated. Results. Arm volumes obtained with these methods had high reliability. Compared with volumes from water displacement, volumes from circumferential measurements had high validity, although these volumes were slightly larger. Expected differences between subjects with and without clinical lymphedema following breast cancer were found. The MDC of volumes or the error associated with a single measure for data based on anatomic landmarks was lower than that based on distance from fingertips. The mean LOA with water displacement were lower for data based on anatomic landmarks than for data based on distance from fingertips. Discussion and Conclusion. Volumes calculated from anatomic landmarks are reliable, valid, and more accurate than those obtained from circumferential measurements based on distance from fingertips. [Taylor R, Jayasinghe UW, Koelmeyer L, et al. Reliability and validity of arm volume measurements for assessment of lymphedema. Phys Ther. 2006;86:205–214.]

Sign in / Sign up

Export Citation Format

Share Document