scholarly journals Hypoxia signature: A useful tool for hypoxia recognition among aircrew

2021 ◽  
Vol 65 ◽  
pp. 81-85
Author(s):  
S Kasture ◽  
MS Nataraja ◽  
SS Mohapatra ◽  
B Sinha
Keyword(s):  
Hypobaric Hypoxia ◽  
Ground Level ◽  
Rank Test ◽  
Mean Values ◽  
Hypoxia Exposure ◽  
Signed Rank ◽  
Severity Scores ◽  
Signed Rank Test ◽  
Minimum Interval ◽  
Hypoxia Signature

Introduction: Hypoxia, often referred to as “silent killer,” a common aeromedical stressor in aviation, may have catastrophic events in-flight unless recognized well in time. On exposure to hypoxia, an individual manifests a specific spectrum of symptoms referred to as “hypoxia signature.” The present study was conducted to assess the manifestation of “hypoxia signature” on repeated exposure to simulated hypobaric hypoxia for its potential usage as a tool for hypoxia recognition. Material and Methods: Twenty-two healthy adult volunteers were subjected to a simulated altitude of 22,000 feet for a duration of 5 min in the hypobaric altitude chamber. The symptoms experienced by the participants at the said altitude were recorded using a questionnaire. The heart rate (HR) and oxygen saturation (SpO2) were recorded during the exposure. The hypoxia exposure was repeated two more times with a minimum interval of 3 weeks between each. Paired t-test was used to compare the mean values of physiological parameters (HR and SpO2) between ground level and 22000 feet recorded in all the three exposures. The hypoxia symptoms and their severity reported during the exposures were compared with those of recalled symptoms (reported after 3 weeks of exposure) using McNemar test and Wilcoxon Signed Rank test, respectively. Results: Paired t-test revealed a statistically significant increase in HR and fall in SpO2 with rise in altitude from ground level to 22000 feet. The three most common symptoms consistently observed were lightheadedness, thinking slow, and warm feeling. The common hypoxic symptoms and their severity scores reported at 22,000 feet compared with recalled counterpart during subsequent exposures did not reveal any significant differences (P > 0.05). Conclusion: There was a high degree of similarity in the frequency and severity score of symptoms between acute exposure to hypobaric hypoxia and recall indicating evidence of repeatability of symptoms across the three sessions of hypoxia exposure within the individuals. This brings out the usefulness of “hypoxia signature” as a tool for hypoxia recognition and its application in hypoxia indoctrination and training for aircrew.

Orthodontic Treatment Planning: Do Orthodontists Treat to Cephalometric Norms?

2003 ◽  
Vol 4 (4) ◽  
pp. 12-27 ◽  
Author(s):  
Khalid M. Al-Balkhi
Keyword(s):  
Statistical Analysis ◽  
Treatment Planning ◽  
Orthodontic Treatment ◽  
Rank Test ◽  
Mean Values ◽  
Kappa Test ◽  
Signed Rank ◽  
Wilcoxon Signed Rank Test ◽  
Signed Rank Test ◽  
Paired T Test

Abstract Cephalometric norms are important to orthodontists in their diagnosis, treatment, and evaluation of orthodontic treatment outcomes. The purpose of the present study is to establish if orthodontists treat and finish their cases to the cephalometric means or norms. Pre- and post-cephalometric radiographs and dental casts of 35 orthodontically treated cases were analyzed. The Kappa test, Wilcoxon Signed-Rank test, Paired t- test, and Z-test were used for the statistical analysis of the data. The result revealed that orthodontists do not reach the cephalometric mean values post-treatment. However, sagittal maxillomandibular relationship and interlabial gap are the main areas of improvements. This leads to improvement of soft tissue esthetics by camouflaging the skeletal and dental relationship. Citation Al-Balkhi KM. Orthodontic Treatment Planning: Do Orthodontists Treat to Cephalometric Norms? J Contemp Dent Pract 2003 November;(4)4:012-027.

scholarly journals hsCRP levels as predictor of difficult laparoscopic cholecystectomy- current status evaluation experience in a teaching institution

2017 ◽  
Vol 4 (4) ◽  
pp. 1345 ◽  
Author(s):  
Balvinder Singh Arora ◽  
Poornima Sen ◽  
Raj Kumar Singh ◽  
Indu Biswal ◽  
Shivani B. Paruthy
Keyword(s):  
Laparoscopic Cholecystectomy ◽  
Rank Test ◽  
P Value ◽  
Study Group ◽  
Mean Values ◽  
Time Of Surgery ◽  
Signed Rank ◽  
Wilcoxon Signed Rank Test ◽  
Signed Rank Test ◽  
The Mean

Background: CRP, an acute phase reactant, is known to increase up to 1000 folds following inflammation and/or infection, but it’s utility as a significant predictor of difficult LC or need for conversion to OC still remains controversial. Limited studies on levels of hsCRP and its association with difficult cholecystectomy are available in literature, especially in Indian context. It is hypothesized that levels of hsCRP pre-operatively for a given population or an individual patient if high would help a surgeon anticipate better a difficult LC, avoid excessive intra-operative manipulations, go for conversion early, reduce time of surgery and hence also minimise post-operative complications.Methods: The present included 30 clinically diagnosed ‘cholecystitis with cholelithiasis’ patients, and 30 healthy individuals. For accurate comparison of hsCRP levels, a fasting and post-operative, 6 and 12 hours, blood samples were analyzed by ELISA test. Pre-and post-operative hsCRP values were recorded and analyzed using multi-user licensed SPSS- Version 21.0.Results: The mean value of hsCRP in controls was 1.43mg/L. In study group, in pre-operative serum samples, the concentration was 20.46 mg/l. At 6 and 12 hours post-operative periods, the mean values observed were 24.4mg/L and 23.7 mg/L respectively. Compared with controls, the mean values are fairly high and statistically also significant (p-values <0.0001). For the study group comparison of hsCRP value pre-operative and post-operatively 6 hours, using Wilcoxon Signed Rank Test has given the p-value <0.001 indicating that the increased hsCRP concentration in patients’ circulation is highly significant as a predictor of difficult laparoscopic cholecystectomy. Similarly, Comparison of hsCRP value pre-operative and post-operative 12 hours, using Wilcoxon Signed Rank Test revealed the p-value <0.007 showing it as highly significant and a predictor of difficult LC requiring conversion. The preoperative value of 20.46% is significant for an individual planned for LC who may require conversion.Conclusions: The preoperative hsCRP value of 20.64mg/L, as per our study results, can be relied upon as predictors of difficult LC and/or need for conversion not only in the study group in the given population but also in individual cases. Such a value of 20.64mg/L is definitely important for an individual case management. Knowing the preoperative values beforehand and if found high, it places a surgeon on a cautious note to avoid too much of LC manipulations intra-operatively, take an early decision to go for conversion, reduce the time of surgery, minimise post-operative complications and hence also morbidity.

scholarly journals Modified SERVPERF and Normalized SERVQUAL Models in Estimation of Service Quality in Higher Educational Institutes

2020 ◽  
pp. 29-39
Author(s):  
Mykola Sydorov ◽  
Svitlana Salnikova ◽  
Yuriy Savelyev ◽  
Oksana Oliinyk
Keyword(s):  
Service Quality ◽  
Sample Size ◽  
Degree Program ◽  
Rank Test ◽  
Mean Values ◽  
Signed Rank ◽  
National University ◽  
Signed Rank Test ◽  
Higher Educational ◽  
The Difference

The purpose of this paper is to propose and empirically substantiate modification of SERVPERF instrument. We demonstrate difference in practical realization of SERVQUAL (Perceptions-Minus-Expectations) and modified SERVPERF (Performance-Minus-Expectation) based on qualitative and two quantitative methodological studies carried out at the Faculty of Sociology of Taras Shevchenko National University of Kyiv. We used questionnaire adaptation for higher educational institutes (HEI).The sample size of the quantitative studies (10 persons of 2nd year of education, 10 persons of 3nd year of education, 10 persons of 4th year of Bachelor degree program and 5 persons of 2nd year of Master degree program; every 4th student of each year of education) complies with the used statistical test and the sample size requirements for focus groups. To compare the instruments we used nonparametric Wilcoxon signed rank test imple­men­ted in the statistical programming package R. Our finding is that modified SERVPERF is more convenient for students, smaller and more useful for online surveys. So, the difference in mean values of answer’s levels is mo­re significant between modified SERVPERF and normalized SERVQUAL than between modified SERVPERF and perceptions in SERVQUAL. Although the research has limitation – it is reconnaissance one and made as a one of steps for adaptation and validation of models for service quality measuring in Ukrainian HEI based on survey of Taras Shevchenko National University of Kyiv students, however, the results of this methodological study allow other researchers to conduct representative studies using an adapted questionnaire of SERVQUAL at their universities. This result is important for service quality estimation which is needed for universities to monitor and improve the quality of their services and elaborate marketing strategy now.

scholarly journals Challenges for the European SPA Management. Results of the ILIS Project

2011 ◽  
Vol 18 (2) ◽  
pp. 160-165
Author(s):  
Mikołaj Bielański ◽  
Susanna Saari ◽  
Anna Wilkońska ◽  
Telle Tuominen ◽  
Inma Mora ◽  
...  
Keyword(s):  
Business Models ◽  
Innovation Management ◽  
Rank Test ◽  
Structured Interviews ◽  
Mean Values ◽  
Signed Rank ◽  
Educational Demand ◽  
Signed Rank Test ◽  
The Mean ◽  
Areas Of Interest

Challenges for the European SPA Management. Results of the ILIS ProjectIntroduction. The spa industry has been rapidly growing throughout Europe in recent years, which has led to an associated increase in educational demand in spa management. The aim of the study was to identify the most important needs for training and the most significant skills among the spa managers and their personnel throughout Europe. Moreover, it was to research the background of spas were the study had taken place. Material and methods. 30 managers took part in semi structured interviews that used a pre-prepared questionnaire. The answers were analysed with Wilcoxon signed rank test and also the mean values were compared. Results. The needs for training and importance of skills vary from country to country but common areas of interest are: sales, marketing, quality and innovation management, legal regulations, operational and social skills. The complex character of answers to questionnaire was a result of different spa business models and differing domestic spa markets as well as variety of legal environments. Conclusions. Spa tourism creates a significant income among the other tourism disciplines since that further research is needed. Demands for the spa education differed accordingly to a stage of each country spa business development. Spa managers tend to express higher training needs for their employees than for themselves.

PENGARUH TIRAH BARING TERHADAP PENURUNAN RASA MUAL PADA KLIEN GASTRITIS DI PELAYANAN KESEHATAN

2019 ◽  
Vol 3 (1) ◽  
pp. 25
Author(s):  
Dewi Nurhanifah ◽  
Desy Noor Latifah Sari ◽  
Rahmawati Rahmawati
Keyword(s):  
Rank Test ◽  
Purposive Sampling ◽  
Signed Rank ◽  
Wilcoxon Signed Rank Test ◽  
Signed Rank Test

Salah satu masalah kesehatan yang sering dialami adalah penyakit gastritis. Gejala yang sering dikeluhkan oleh penderita gastritis adalah mual. Salah satu penatalaksanaan keperawatan yang dapat mengurangi rasa mual adalah tirah baring. Penelitian ini bertujuan untuk mengetahui pengaruh tirah baring terhadap penurunan rasa mual pada klien gastritis di Pelayanan Kesehatan. Metode penelitian menggunakan eksperimental dengan bentuk penelitian one group pretest-posttest design. Populasi dan sampel adalah klien yang mengalami mual di Wilayah Kerja Puskesmas  yang berjumlah 15 orang. Sampel diambil dengan teknik purposive sampling. Alat pengumpul data menggunakan observasi. Analisa data melalui uji Wilcoxon Signed Rank Test. Hasil penelitian menujukkan klien gastritis sebelum tirah baring mengalami mual ringan sebanyak 7 orang (46,7%), sesudah tirah baring mengalami tidak mual sebanyak 7 orang (46,7%). Ada pengaruh tirah baring terhadap penurunan rasa mual pada klien gastritis di Pelayanan Kesehatan (ρ value = 0,001).

Efektifitas Kompres Jahe Merah Hangat Dan Kompres Serai Terhadap Penurunan Intensitas Nyeri Arthritis Remathoid Pada Lanjut Usia Di Desa Mojoranu Kecamatan Dander Kabupaten Bojonegoro

2017 ◽  
Vol 5 (1) ◽  
Author(s):  
Ferawato Ferawati
Keyword(s):  
Pain Intensity ◽  
Therapy Group ◽  
The Elderly ◽  
Rank Test ◽  
Test Design ◽  
Signed Rank ◽  
Wilcoxon Signed Rank Test ◽  
Post Test ◽  
Signed Rank Test ◽  
Red Ginger

ABSTRAKReumatoid Artritis (RA) merupakan penyakit muscoloskelektal yang sering terjadi pada usia lanjut. Gangguan pada system muscoloskelektal yang ditandai dengan munculnya nyeri sendi dan kekakuan yang mengakibatkan penurunan kemampuan fisiologis atau kualitas hidup lansia. Dampak dari Reumatoid Artritis dapat menimbulkan beberapa keluhan dan dapat menyebabkan kelumpuhan. Untuk menganalisis efektifitas kompres jahe merah hangat dan kompres serai hangat terhadap penurunan intensitas nyeri artitris remauthoid pada lanjut usia.Metode Penelitian: Jenis penelitian adalah quasy experimental dengan two group pre – post test design. Subjek adalah sebagian lansia yang penderita Arthritis Remathoid di Desa Sumberagung Kecamatan Dander Kabupaten Bojonegoro. Subjek dibagi menjadi dua kelompok yaitu kelompok I (n=15) diberi perlakuan kompres jahe hangat dan II (n=15) diberi perlakuan kompres serai hangat. Analisis yang digunakan uji Mann Whitney U Test dan Wilcoxon Signed Ranks Test dengan ingkat kemaknaan α = 0,05.Hasil uji Wilcoxon Signed Rank Test, didapat keduanya mempunyai nilai kemaknaan yaitu ρ value = 0,000. Nilai ρ = 0,031 pada kelompok kompres serai hangat dan kelompok kompres jahe merah ρ value = 0,165. Hasil uji Mann Withney U Test pada Post perlakuan kedua terapi diperoleh selisih nilai nyeri pada kompres jahe ρ= 0,003 dan selisih nilai nyeri kompres serai ρ value = 0,001.Penggunaan kompres jahe merah lebih efektif dibandingkan dengan kompres serai terhadap penurunan intensitas nyeri arthritis remathoid. Kata Kunci: usia lanjut, Reumatoid Artritis (RA), jahe merah, serai, perbedaan efektifitas.    ABSTRACTReumatoid Artritis (RA) is a musculoskeletal which frequently occurs in the elderly. The disorders in the musculoskeletal system are noted by the occurrence of pain in the joints and stiffness which reduces the physiological abilities or life quality of the elderly. The disease causes many such complaints and  consequences of the disease rheumatoid arthritis may experience paralysis. The aims of this study is to analyze the effect of warm red ginger compress therapy and warm lemongrass compress therapy against of  Decreased pain intensity in  the elderly  with  artitris remauthoid. The study was Queasy experimental with two group pre – post test design. Subjects were some elderly people with Arthritis Remathoid in Sumberagung Village, Dander Sub District, Bojonegoro District. Subjects were divided into two groups: group I (n-15) with warm ginger compress therapy, and II (n=15) with warm lemongrass compress therapy. The analyses used in this study were the Mann Whitney U Test and Wilcoxon Signed Ranks Test with α of 0.05. Results of Wilcoxon Signed Rank Test obtained Both have meaning p value of  0.000. ρ value = 0,031 in a warm lemongrass compress therapy group and obtained of warm ginger compress therapy group ρ value = 0,165. The results of Mann Withney U Test on Post treatment second therapy, obtained difference of warm ginger compress therapy with ρ value= 0,003 and difference of warm lemongrass compress therapy with ρ value = 0,001.The use of warm ginger compresses therapy are more effective than a warm lemongrass compress therapy against decreased pain intensity in  the elderly  with  artitris remauthoid.  Keywords: elderly, artitris remauthoid, red ginger, lemongrass, differences in effectiveness

The Degree of Subjective Complaints of Students Practice in Mechanical Technology Laboratories

2018 ◽  
Vol 4 (1) ◽  
pp. 22
Author(s):  
I Ketut Widana
Keyword(s):  
Engineering Students ◽  
Standing Position ◽  
Statistical Test ◽  
Rank Test ◽  
Cross Sectional ◽  
Signed Rank ◽  
Before And After ◽  
Signed Rank Test ◽  
The Difference ◽  
Paired T Test

The working practice of the engineering students is part of the learning process that is irreducible and indispensable. The composition of  lecturing between theoretical and practical one is 40% to 60%. With this condition, the students spend more time at the laboratory. Generally, the students perform in the laboratory work by standing position. The design of research is observational cross-sectional. The method applied is observation, interview and measuring. The subjects of research are practicing students amounting to 21 students. Referring to the analysis of statistical test or Wilcoxon signed ranks test, the difference of effect of work position is significant, namely p < 0.05 towards musculoskeletal disorders (MSDs) before and after working. The quantity of the average complaint after working is score 44.62 ± 9.47. The result of Wilcoxon signed rank test shows that there is significant different effects of standing work position, namely p < 0.05 towards fatigue generally before and after working. The degree of the working pulse is on the average of 110.78  ± 17.80 bpm (beats per minutes) which can be categorized into the medium workload. Using paired t-test, the result is p < 0.05.

PENGARUH PEMBACAAN DZIKIR PADA IBU MELAHIRKAN TERHADAP TINGKAT NYERI INTRA NATAL DI RUMAH BERSALIN FAJAR YOGYAKARTA

2010 ◽  
Vol 1 (1) ◽  
Author(s):  
Sri Sumaryani ◽  
Indri Nurasa
Keyword(s):  
Home Delivery ◽  
Labor Pain ◽  
Rank Test ◽  
Control Group ◽  
Pain Level ◽  
Control Group Design ◽  
Signed Rank ◽  
Wilcoxon Signed Rank Test ◽  
Post Test ◽  
Signed Rank Test

PENGARUH PEMBACAAN DZIKIR PADA IBU MELAHIRKAN TERHADAP TINGKAT NYERI INTRA NATAL DI RUMAH BERSALIN FAJAR YOGYAKARTAEffect of Reading Dhikr Women On The Level Of Birth Pain Intra Christmas At Home Delivery Dawn YogyakartaSri Sumaryani1 & Indri Nurasa21, 2)Program Studi Ilmu Keperawatan Fakultas Kedokteran Universitas Muhammadiyah YogyakartaJl. Lingkar Barat Taman Tirto Kasihan Bantul Yogyakarta 55182*)e-mail: [email protected] atau yang biasa disebut dengan proses persalinan merupakan suatu proses membuka dan menipisnya serviks, dan janin turun ke dalam jalan lahir. Gejala awal persalinan akan menimbulkan nyeri yang sangat hebat karena adanya kontraksi uterus dan otot abdomen. Nyeri intra natal adalah suatu nyeri yang dirasakan saat terjadinya proses persalinan (melahirkan). Saat nyeri persalinan muncul, ada baiknya bagi ibu untuk membaca dzikir. Dzikir adalah mengingat Allah SWT dan menghadirkan apa yang tadinya ada di dalam benak untuk kemudian dilafadzkan atau disebut-sebut yang dapat dilakukan secara lisan dengan menggunakan lidah atau bisa juga diucapkan tanpa adanya keterlibatan lidah, yaitu melalui hati. Penelitian ini bertujuan untuk mengetahui pengaruh pembacaan dzikir pada ibu melahirkan terhadap tingkat nyeri intra natal. Teknik pengambilan sampel menggunakan purposive sampling. Desain penelitian pra eksperimen, dengan rancangan pre test-post test tanpa kelompok kontrol. Sampel penelitian berjumlah 30 responden. Pengumpulan data dilakukan dengan observasi langsung kepada responden untuk mengukur tingkat nyeri. Analisa data menggunakan uji statistik wilcoxon signed rank test dan regresi linier dengan menggunakan SPSS 14. Hasil penelitian menunjukkan bahwa hasil uji statistik untuk nilai pre test dan post test tingkat nyeri diperoleh nilai signifikansi 0,02 dengan p < 0,05.Kata kunci: pembacaan dzikir, melahirkan, nyeri intra natal, tingkat nyeriABSTRACTThe delivery or usually called labor process is a process open and thin the cervix, and descent of the fetus into the way of birth. The early symptom of delivery will be appearing very heavy because there are uterus contraction and abdomen muscle. In partum pain is a pain which feel when delivery process happening (labor). When labor pain appears, there is a good for the mother to read dzikir. Dzikir is remembering Allah SWT and make present what before in the mind and then pronounced or make cal can do spoken by tongue or pronounced without there are involving tongue, by heart. The purpose of this research is to know about the influence of reading dzikir to the delivery mother toward in partum level of pain. Technique sampling used purpose sampling. The research of design pre experiment, with pre test-post test without control group design. The sample in this research’s total is 30 respondents. The manner of data was did by direct observation to the respondents to measure pain level. Data analysis used statistic test wilcoxon signed rank test and regression linier in SPSS 14. The results of research showed that results of the statistic pretest and posttest of pain level show significance value 0,02 with p < 0,05.Keywords: reading dzikir, delivery, in partum pain, pain level

scholarly journals Evaluation of Intraocular Pressure and Other Biomechanical Parameters to Distinguish between Subclinical Keratoconus and Healthy Corneas

2021 ◽  
Vol 10 (9) ◽  
pp. 1905
Author(s):  
Cristina Peris-Martínez ◽  
María Amparo Díez-Ajenjo ◽  
María Carmen García-Domene ◽  
María Dolores Pinazo-Durán ◽  
María José Luque-Cobija ◽  
...  
Keyword(s):  
Function Theory ◽  
Rank Test ◽  
Maximum Deformation ◽  
Corrected Visual Acuity ◽  
Signed Rank ◽  
Signed Rank Test ◽  
Biomechanical Parameters ◽  
Spss Software ◽  
Biomechanical Measurements ◽  
Noncontact Tonometry

(1) Purpose: To assess the main corneal response differences between normal and subclinical keratoconus (SCKC) with a Corvis® ST device. (2) Material and Methods: We selected 183 eyes of normal patients, of a mean age of 33 ± 9 years and 16 eyes of patients with SCKC of a similar mean age. We measured best corrected visual acuity (BCVA) and corneal topography with a Pentacam HD device to select the SCKC group. Biomechanical measurements were performed using the Corvis® ST device. We carried out a non-parametric analysis of the data with SPSS software (Wilcoxon signed rank-test). (3) Results: We found statistically significant differences between the control and SCKC groups in some corneal biomechanical parameters: first and second applanation time (p = 0.05 and p = 0.02), maximum deformation amplitude (p = 0.016), highest concavity radius (p = 0.007), and second applanation length and corneal velocity ((p = 0.039 and p = 0.016). (4) Conclusions: Our results show that the use of normalised biomechanical parameters provided by noncontact tonometry, combined with a discriminant function theory, is a useful tool for detecting subclinical keratoconus.

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