Search Results - "Bland–Altman plot"

Correlation of corneal thickness measurements between tono-pachymeter and scheimpflug-placido topography by Ercan, Zeynep Eylül

“…Inter-measurement agreement between them was determined using Bland-Altman Plot analysis. Age groups were also formed as group 1 (aged 18-50 years, 94 males, 106 females) and group 2 (age >51 years, 100 males, 100 females). …”
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When is 'Urgent' Really Urgent and Does it Matter? Misclassification of Procedural Status and Implications for Risk Assessment in Cardiac Surgery by Karim, M., Reid, Christopher, Cochrane, A., Tran, L., Billah, B.

“…Observed-to-predicted risk ratios (OPRs) of 30-day mortality were calculated for the model using reported status and corrected status and compared. A Bland-Altman plot was generated to examine the level of agreement between the two OPRs. …”
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Missing Value Imputation Improves Mortality Risk Prediction Following Cardiac Surgery: An Investigation of an Australian Patient Cohort by Karim, M., Reid, Christopher, Tran, L., Cochrane, A., Billah, B.

“…Results: One or more missing predictor variables were present in 15.8% of the patients in the dataset. The Bland-Altman plot demonstrated significant disagreement between the risk scores (p<0.0001) generated by MI and CC analysis approaches and showed a trend of increasing disagreement for patients with higher risk of mortality. …”
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Validation of spatial microsimulation models: a proposal to adopt the Bland-Altman method by Timmins, Kate A., Edwards, Kimberley L.

“…The aim of this paper is to introduce and demonstrate a method employed widely in healthcare calibration studies. The ‘Bland-Altman plot’ consists of a plot of the difference between two methods against the mean (x-y versus x+y/2). …”
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Arterial stiffness and haemorrhage in the vulnerable carotid plaque by Yong, Yao Pey

“…Similarly, there was good intra-observer consistency (Cronbach's Alpha=0.747; Bland-Altman plot bias=0.06, upper and lower limits of agreement=+1.90, -1,78; n=13). …”
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The intra- and inter-grader reliability of Meibomian gland loss measurement by Kamarul Zaman, Nur Aizzah Hanan, Che Azemin, Mohd Zulfaezal

“…The agreement within- and between-examiners were analyzed using intra-class correlation (ICC) and Bland-Altman plot. Results: ICC results showed only right and left upper eyelid were significantly correlated and showed excellent reliability for both intra- (RE: 0.944) (LE: 0.948) and inter-grader (RE: 0.831) (LE: 0.725) with p-value of less than 0.01. …”
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Accuracy of contrast-enhanced computed tomography scan in assessing depth of invasion in oral tongue squamous cell carcinoma / Chin Siok Yoong by Chin, Siok Yoong

“…Mean DOI was compared using repeated measures ANOVA and accuracy was assessed using Bland�Altman plot. RESULTS: Intraobserver reliability was excellent, with ICC=0.996 for axial and ICC=0.999 for coronal. …”
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A study on the reliability of bilispect to measure bilirubin levels in term neonates by Tengku Hussain, Tengku Hasnita

“…Pearson correlation value derived were weak positive correlation (0.466) and moderate positive correlation (0.566) for pre and post-phototherapy respectively. The Bland Altman plot degree of agreement between these methods were 93.22% for prephototherapy and 96.6% for post-phototherapy. …”
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Development of a new computer-based physical activity questionnaire to estimate habitual physical activity level in Malaysian adolescents by Pey, Sze Teo, Abdullah, Nurul-Fadhilah, Leng, Huat Foo

“…Method comparisons assessed by the Bland–Altman plot analysis found that the total physical activity levels, calculated from the cPAQ, fell within the mean ± 2 standard deviation. …”
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Measurement method for erector spinae muscle activity during patient handling using inertial sensor and shoe-type force sensor by Kitagawa, Kodai, Matsumoto, Koji, Iwanaga, Kensuke, Ahmad, Siti Anom, Nagasaki, Takayuki, Nakano, Sota, Hida, Mitsumasa, Okamatsu, Shogo, Wada, Chikamune

“…Results show that this method can measure erector spinae muscle activity with a small error (less than 5% maximal voluntary contractions) and a significantly high correlation with actual value (r = 0.891, p <0.05). In addition, a Bland-Altman plot showed no fixed and proportional errors. …”
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Measurement of contrast sensitivity using the M&S smart system II compared with the standard Pelli–Robson chart in patients with primary pterygium by Hilmi, Mohd Radzi, Khairidzan, Mohd Kamal, Che Azemin, Mohd Zulfaezal, Azami, Muhammad Hanafi, Ariffin, Azrin Esmady,

“…Results: The mean and standard deviation of CS measurement in the two tests were comparable (1.22 ± 0.56 vs. 1.21 ± 0.57 log units, respectively, p = 0.083). The Bland–Altman plot revealed that the mean difference between the two charts was 0.0016 log units (standard deviation: 0.009 log units) with narrow limits of agreement of −0.0186 to 0.0186. …”
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Small area synthetic estimates of smoking prevalence during pregnancy in England by Szatkowski, Lisa, Fahy, Samantha, Coleman, Tim, Taylor, Joanna, Twigg, Liz, Moon, Graham, Leonardi-Bee, Jo

“…The expected prevalence of smoking at delivery by PCT was compared with midwife-collected Smoking at the Time of Delivery (SATOD) data using a Bland-Altman plot. Results: The expected prevalence of smoking during pregnancy by PCT ranged from 8.1% (95% CI 5.6-1.0) to 31.6% (27.5-34.8). …”
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Comparison of the NBM 200 non-invasive haemoglobin sensor with Sahli’s hemometer among adolescent girls in rural India by Ahankari, Anand S., Dixit, J.V., Fogarty, Andrew W., Tata, Laila J., Myles, Puja R.

“…Haemoglobin (Hb) measurements from the non-invasive sensor (NBM 200) were compared with measurements obtained from Sahli’s hemometer using Bland-Altman plot, Spearman correlation coefficient, sensitivity, specificity, and area under the receiver operating characteristic curve analysis (AUROC). …”
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Small area synthetic estimates of smoking prevalence during pregnancy in England by Szatkowski, Lisa, Fahy, Samantha, Coleman, Tim, Taylor, Joanna, Twigg, Liz, Moon, Graham, Leonardi-Bee, Jo

“…The expected prevalence of smoking at delivery by PCT was compared with midwife-collected Smoking at the Time of Delivery (SATOD) data using a Bland-Altman plot. Results The expected prevalence of smoking during pregnancy by PCT ranged from 8.1 % (95 % CI 5.6–1.0) to 31.6 % (27.5–34.8). …”
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Predicting 1 Repetition Maximum Using Handheld Dynamometry. by Tan, A., Grisbrook, T., Minaee, N., Williams, Sian

“…MAIN OUTCOME MEASURES: Statistical analysis of the relation between the measures of strength was established using Pearson correlation and a Bland-Altman plot. A linear regression analysis with included covariates (gender, age, resistance training history, and body mass index) was used to derive the prediction equations. …”
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Development and Validation of Food Frequency Questionnaire (FFQ) for Estimation of the Dietary Polyphenol Intake Among Elderly Individuals in Klang Valley by Suzana Shahar, Chiah, Hui Lin, Hasnah Haron

“…Spearman’s rho and Kendall’s tau-b analysis indicated that there was a signifi cant positive correlation between polyphenol intake estimated from FFQ and reference method (r = 0.41, p < 0.001; r = 0.28, p < 0.001). For Bland-Altman plot, 95.7% of scattered plot fell within ± 1.96 SD limits of agreement revealed that there was good agreement between the two methods used. …”
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Automated 6-minute walk test distance measurement and walk characterisation using a novel infrared sensor-based technique by Isniza Ismail, Leela T. Narayanan, Rumaisa Abu Hasan, Eko Supriyanto

“…For the 6-minute walk en bloc and its three segments, the difference in distance (Δd) between iTMS (diTMS) and camera recording method (dCRM) showed positive biases with small LOA95% in Bland-Altman plot. The iTMS has an accurate distance measurement with ± 0.20% error of dCRM for en bloc 6-minute walk can characterise the resting events of 0.5 s and more. …”
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Validation of Menstrual Disorders Questionnaire (MDQ) among medical students in Universiti Sains Malaysia by Lin, Yee Siau

“…Graphical presentation of test-retest reliability using Bland Altman plot showed the data distributed evenly in the plot. …”
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Subjective and objective levels of physical activity and their association with cardiorespiratory fitness in rheumatoid arthritis patients by Yu, C., Rouse, P., Veldhuijzen Van Zanten, J., Ntoumanis, Nikos, Kitas, G., Duda, J., Metsios, G.

“…Methods: The participants wore the GT3X for seven days before completing the IPAQ and VO2max test. The Bland-Altman plot was used to illustrate the agreement between the objective and subjective PA data, and the Wilcoxon test was employed to examine the differences. …”
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Development of nutrition and lifestyle intervention modules and its effectiveness among working adults with metabolic syndrome in mauritius by Bibi, Zaynab Toorabally

“…Spearman correlation coefficient for energy, protein, carbohydrate and fat were 0.75, 0.57, 0.39 and 0.53 respectively, showing moderate to good correlations. The Bland Altman plot demonstrated a good agreement (between ± 2SD) between the developed FFQ and the 24-hour dietary recalls. …”
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