Subtypes of Sleep Disturbance in Parkinson's Disease Based on the Cross-Culturally Validated Korean Version of Parkinson's Disease Sleep Scale-2

Screening Instruments for Autism Spectrum Disorder: Mini Review / 신경정신의학

Most screening instruments for autism spectrum disorder (ASD) have been developed and evaluated in western countries. Therefore, difficulties are often experienced when using these instruments because of the cultural differences in the symptoms of ASD. This paper reviews the screening instruments for ASD used in South Korea and explores a new direction in the screening of ASD in South Korea. Among the many published screening instruments for ASD, the screening instruments with a validated Korean version were chosen and reviewed. A total of nine autism-screening instruments met the criteria for the inclusion criteria. Nine screening instruments were summarized and the direction for the Korean version of screening instruments was discussed.

Relationship between Insomnia and Depression in Type 2 Diabetics / 정신신체의학

OBJECTIVES: Many of the patients with type 2 diabetes are associated with sleep problems, and the rate of insomnia is known to be higher in the general population. The aims of this study were to know the frequency and clnical characteristics of insomnia, and related variables to insomnia in patients diagnosed with type 2 diabetes. METHODS: For 99 patients from 18 to 80 years of age (65 males and 34 females) with type 2 diabetes, interviews were performed. Total sleep time and sleep latency was evaluated. Insomnia was evaluated using the Korean Version of the Insomnia Severity Index (ISI-K). Severity of depressive symptoms were evaluted using the Korean version of the Hamilton Depression Scale (K-HDRM). According to the cutoff score of 15.5 on the ISI-K, subjects were divided into the group of type 2 diabetics with insomnia (N=34) and those without insomnia (N=65) at first, and then statistically analyzed. RESULTS: TInsomnia could be found in 34.34% of type 2 diabetics. Type 2 diabetics with insomnia had significantly more single or divorced (respectively 11.8%, p<0.05), higher total scores of the K-HDRS (11.76±5.52, p<0.001), shorter total sleep time (5.35±2.00 hours, p<0.001), and longer sleep latency (50.29±33.80 minutes, p<0.001). The all item scores of the ISI-K in type 2 diabetics with insomnia were significantly higher than those in type 2 diabetics without insomnia, that is, total (18.38±2.69), A1 (Initial insomnia) (2.97±0.76), A2 (Middle insomnia) (3.06±0.69), A3 (Terminal insomnia) (2.76±0.61), B (Satisfaction) (3.18±0.72), C (Interference) (2.09±0.97), D (Noticeability) (2.12±1.09) and E (Distress) (2.21±0.81) (respectively p<0.001). Variables associated with insomnia in type 2 diabetics were as following. Age had significant negative correlation with A3 items of the ISI-K (β=−0.241, p<0.05). Total scores of the K-HDRS had significant positive correlation, while total sleep time had significant negative correlation with all items of the ISI-K (respectively p<0.05). Sleep latency had significant positive correlation with total,, A1, B and E item scores of the ISI-K (respectively p<0.05). CONCLUSIONS: Insomnia was found in about 1/3 of type 2 diabetics. According to the presence of insomnia, clinical characteristics including sleep quality as well as quantity seemed to be different. Because depression seemed to be correlated with insomnia, clinicians should pay attention to early detection and intervention of depression among type 2 diabetics

Validation of the Korean Version of the Biological Rhythms Interview of Assessment in Neuropsychiatry

OBJECTIVE: The Biological Rhythms Interview of Assessment in Neuropsychiatry (BRIAN) is a scale used to clinically evaluate disturbances in biological rhythm. In this study, we aimed to examine the reliability and validity of the Korean version of the BRIAN (K-BRIAN) in a Korean population. METHODS: A total of 181 participants, including 141 outpatients with bipolar disorder (BD; type I, 62; type II, 79) and 40 controls, were recruited. Construct validity was tested by comparing the mean K-BRIAN scores of the BD patients and control subjects. Concurrent validity was tested by evaluating the association between the K-BRIAN and the Morningness-Eveningness Questionnaire (MEQ). RESULTS: The mean K-BRIAN scores of the control subjects and patients with BD differed significantly (p < 0.001). Particularly, the mean K-BRIAN score was considerably lower among control subjects (mean±standard deviation=35.00±8.88) than among patients with BD type I (41.19±12.10) and type II (50.18±13.73). The Cronbach’s alpha for the K-BRIAN was 0.914. The K-BRIAN was found to correlate with the MEQ (r=-0.45, p < 0.001). CONCLUSION: The findings affirm that the K-BRIAN has good construct validity and internal consistency. This suggests that the K-BRIAN can be used to assess biological rhythms in the Korean population, especially for patients with mood disorder.

Usage Status and Characteristics of Mobile Devices for the Geriatric Population

OBJECTIVE: This study aims to investigate the current usage status and identify the needs of mobile devices in the geriatric population, thus grasping the accessibility and possibility of mobile devices which can be positively used to allow them to obtain health information and manage their mental health. METHODS: All self-reported questionnaires, such as demographics, mobile phone usage, and several mental health-related scales, were completed by two elderly groups (14 males ; aged over 60, mean=73) who visited Seodaemun-gu center for dementia: 1) 54 feature phone and 2) 57 smartphone users. RESULTS: The results revealed that they have had the need to receive health information and healthcare particularly on psychiatric disorders such as dementia, geriatric depression, and anxiety. The relation between wireless calling plan and the two groups was significant. The two groups showed a significant difference only in the Short form of Geriatric Depression Scale (SGDS) score; The feature phone group had significantly higher SGDS score than the smartphone group did. CONCLUSION: As the elderly mobile phone users showed a high level of need for health information and healthcare via their own mobile phones, the data of this study are expected to serve as a foundation for the development of elderly-friendly mobile applications and programs.

Association between Quantitative Electroencephalography Findings and Cognitive-Behavioral Characteristics in Attention Deficit/Hyperactivity Disorder : A Retrospective Cross-Sectional Study / 신경정신의학

OBJECTIVE: This study examined the association between the wave form in quantitative electroencephalography (QEEG) and the cognitive and behavioral characteristics measured by the Korean version of Wechsler Intelligence Scale for Children 4th edition (K-WISC-IV), Korean version of the attention deficit/hyperactivity disorder Rating Scale (K-ARS), and Korean version of Child Behavior Checklist (K-CBCL) in children diagnosed with ADHD. METHOD: A retrospective cross-sectional study was performed on children aged 8 to 13 years, who were diagnosed with ADHD at Samsung Medical Center from November 2011 to March 2017. A total of 57 ADHD children were selected by a medical chart review. Their QEEG findings and psychological test results, including K-WISC-IV, K-CBCL, and K-ARS (n=42), were collected. The QEEG was analyzed by the ranges of Hz: delta (1–4 Hz), theta (4–8 Hz), alpha (8–12 Hz), and beta (12–25 Hz) and transformed to the z-scored relative power. The collected data were analyzed using Pearson and Partial correlation analysis. RESULTS: The Letter-Number Sequencing scores of K-WISC was positively correlated with fronto-central alpha. The hyperactivity/impulsivity scores of K-ARS were positively correlated with the theta/beta ratio. Among the items of K-CBCL, social immaturity was positively correlated with delta and theta, and negatively correlated with alpha. Social competence was negatively correlated delta and theta, and positively correlated with alpha. CONCLUSION: These results suggest that the resting state QEEG results of children with ADHD may reflect their cognitive and behavioral characteristics, especially in working memory/executive function, hyperactivity/impulsivity, and sociality.

Korean Clinical Practice Guidelines for Aneurysmal Subarachnoid Hemorrhage

Despite advancements in treating ruptured cerebral aneurysms, an aneurysmal subarachnoid hemorrhage (aSAH) is still a grave cerebrovascular disease associated with a high rate of morbidity and mortality. Based on the literature published to date, worldwide academic and governmental committees have developed clinical practice guidelines (CPGs) to propose standards for disease management in order to achieve the best treatment outcomes for aSAHs. In 2013, the Korean Society of Cerebrovascular Surgeons issued a Korean version of the CPGs for aSAHs. The group researched all articles and major foreign CPGs published in English until December 2015 using several search engines. Based on these articles, levels of evidence and grades of recommendations were determined by our society as well as by other related Quality Control Committees from neurointervention, neurology and rehabilitation medicine. The Korean version of the CPGs for aSAHs includes risk factors, diagnosis, initial management, medical and surgical management to prevent rebleeding, management of delayed cerebral ischemia and vasospasm, treatment of hydrocephalus, treatment of medical complications and early rehabilitation. The CPGs are not the absolute standard but are the present reference as the evidence is still incomplete, each environment of clinical practice is different, and there is a high probability of variation in the current recommendations. The CPGs will be useful in the fields of clinical practice and research.

Korean Clinical Practice Guidelines for Aneurysmal Subarachnoid Hemorrhage

Despite advancements in treating ruptured cerebral aneurysms, an aneurysmal subarachnoid hemorrhage (aSAH) is still a grave cerebrovascular disease associated with a high rate of morbidity and mortality. Based on the literature published to date, worldwide academic and governmental committees have developed clinical practice guidelines (CPGs) to propose standards for disease management in order to achieve the best treatment outcomes for aSAHs. In 2013, the Korean Society of Cerebrovascular Surgeons issued a Korean version of the CPGs for aSAHs. The group researched all articles and major foreign CPGs published in English until December 2015 using several search engines. Based on these articles, levels of evidence and grades of recommendations were determined by our society as well as by other related Quality Control Committees from neurointervention, neurology and rehabilitation medicine. The Korean version of the CPGs for aSAHs includes risk factors, diagnosis, initial management, medical and surgical management to prevent rebleeding, management of delayed cerebral ischemia and vasospasm, treatment of hydrocephalus, treatment of medical complications and early rehabilitation. The CPGs are not the absolute standard but are the present reference as the evidence is still incomplete, each environment of clinical practice is different, and there is a high probability of variation in the current recommendations. The CPGs will be useful in the fields of clinical practice and research.

Oral health literacy of Korean adults / 대한구강보건학회지

OBJECTIVES: We used a questionnaire to measure the oral health literacy of Korean adults. We then evaluated the validity and reliability of the questionnaire. METHODS: This questionnaire was developed using a literacy assessment tool from the National Institute of Korean Language, Republic of Korea. The survey was composed of instructions for dental treatment and oral health information. The components were sub-classified into three cognitive processes (realistic, deductive, and critical domains). Of the 337 university students who received the questionnaire, 84.3 percent responded. We calculated the reliability of the questionnaire using Cronbach's α, to assess the item discrimination and difficulty as well as effectiveness of distracters. RESULTS: We found that the reliability of the 24 items in the questionnaire was 0.89. The mean item discrimination and difficulty values were 0.53 and 0.71. The percentage of correct answers was higher than the effectiveness of the distracters in all items. The mean number of answers to the oral health information data (72.1) was higher than that to dental treatment instructions (63.9). The mean number of answers to the items in the realistic domain (76.1) was higher than that to the items in the deductive (69.4) and critical (65.9) domains. Neither gender nor university major had a significant effect on the percentage of correct answers. CONCLUSIONS: Sixty percent of university students were found to have the government-recommended level of oral literacy. Therefore, better oral health education is required to ensure that all individuals meet government-recommended levels.

Relationship between Voice Fatigue and Voice Assessment in Patients with Voice Disorders and Applicability of Voice Fatigue Index in Korean Version / 대한이비인후과학회지

BACKGROUND AND OBJECTIVES: Vocal fatigue is a symptom and a term that has been frequently used in the clinical study. Although a recently developed vocal fatigue index (VFI), a self-report questionnaire that reliably identifies vocal fatigue patients, provides detailed characteristics of the symptom, there has been no study about the association between VFI and other voice assessment parameters. This study aimed to investigate whether there is a relationship between VFI and the established voice assessment in Korean patients. SUBJECTS AND METHOD: Two hundred fifty-seven patients with voice disorders (mean age, 49.48±14.34; 145 male and 112 female) undertook the voice assessment that consisting of perceptual judgment [Grade, Roughness, Breathiness, Asthenia, Strain (GRBAS) Scale], acoustic and aerodynamic analysis, and voice handicap index (VHI) questionnaire. All patients validated using VFI. Correlation analysis between each voice assessment and VFI was conducted. RESULTS: There were statistical significances between items of voice assessment and VFI. Among the GRBAS Scale, G, B, A, S and a number of acoustic measures were associated with vocal fatigue. In particular, these features were prominent in men. As the score of VFI increased, the sound pressure level during voicing and the phonation time from aerodynamic measures were decreased while the mean pitch was increased. In addition, VFI was closely correlated with pre-existing self-report questionnaire and VHI in both gender. CONCLUSION: These findings suggest that VFI has a significant association with pre-established voice assessment. Therefore, VFI can be used as a reliable tool for identifying and validating vocal fatigue in Korean.

The Reliability and Validity of the Korean Version of Behavioral Activation for Depression Scale / 신경정신의학

OBJECTIVES: The Behavioral Activation of Depression Scale (BADS) has been reported to be a valid tool for assessing the different behavioral aspects of depression, such as activation, rumination or avoidance, and functional impairment. The aim of this study was to assess the reliability and validity of the Korean version of BADS (K-BADS). METHODS: A sample of 196 outpatients completed the K-BADS and the data were analyzed for internal consistency and factor structures. An additional 51 outpatients re-filled the K-BADS after two weeks for the test-retest reliability. To test for the validity, the Hospital Anxiety and Depression Scale (HADS), Working Alliance Inventory (WAI), Drug Attitude Inventory-10 (DAI-10), and Mindfulness Attention Awareness Scale (MAAS) were administered. RESULTS: Internal consistency of K-BADS was good (Cronbach's alpha=0.843) and principal component factor analysis revealed the four-factor structure. The K-BADS showed a reasonable test-retest reliability (r=0.863, p<0.001). The total score of K-BADS correlated significantly with the total scores of the HADS depression (r=−0.694) and HADS anxiety (r=−0.681). No correlations were found between the K-BADS and the K-WAI (r=0.170) and between the K-BADS and the K-DAI-10 (r=0.311). CONCLUSION: The K-BADS is a reliable and valid instrument for measuring the behavioral activation for depression in Korean patients with depressive symptoms.

Validation of the Korean Version of the Scale for Outcomes in Parkinson's Disease-Autonomic

OBJECTIVE: Autonomic symptoms are commonly observed in patients with Parkinson's disease (PD) and often limit the activities of daily living. The Scale for Outcomes in Parkinson's disease-Autonomic (SCOPA-AUT) was developed to evaluate and quantify autonomic symptoms in PD. The goal of this study was to translate the original SCOPA-AUT, which was written in English, into Korean and to evaluate its reliability and validity for Korean PD patients. METHODS: For the translation, the following processes were performed: forward translation, backward translation, expert review, pretest of the pre-final version and development of the final Korean version of SCOPA-AUT (K-SCOPA-AUT). In total, 127 patients with PD from 31 movement disorder clinics of university-affiliated hospitals in Korea were enrolled in this study. All patients were assessed using the K-SCOPA-AUT and other motor, non-motor, and quality of life scores. Test-retest reliability for the K-SCOPA-AUT was assessed over a time interval of 10−14 days. RESULTS: The internal consistency and reliability of the K-SCOPA-AUT was 0.727 as measured by the mean Cronbach's α-coefficient. The test-retest correlation reliability was 0.859 by the Guttman split-half coefficient. The total K-SCOPA-AUT score showed a positive correlation with other non-motor symptoms [the Korean version of non-motor symptom scale (K-NMSS)], activities of daily living (Unified Parkinson's Disease Rating Scale part II) and quality of life [the Korean version of Parkinson's Disease Quality of Life 39 (K-PDQ39)]. CONCLUSION: The K-SCOPA-AUT had good reliability and validity for the assessment of autonomic dysfunction in Korean PD patients. Autonomic symptom severities were associated with many other motor and non-motor impairments and influenced quality of life.

Stroke Impact Scale 3.0: Reliability and Validity Evaluation of the Korean Version

OBJECTIVE: To establish the reliability and validity the Korean version of the Stroke Impact Scale (K-SIS) 3.0. METHODS: A total of 70 post-stroke patients were enrolled. All subjects were evaluated for general characteristics, Mini-Mental State Examination (MMSE), the National Institutes of Health Stroke Scale (NIHSS), Modified Barthel Index, Hospital Anxiety and Depression Scale (HADS). The SF-36 and K-SIS 3.0 assessed their health-related quality of life. Statistical analysis after evaluation, determined the reliability and validity of the K-SIS 3.0. RESULTS: A total of 70 patients (mean age, 54.97 years) participated in this study. Internal consistency of the SIS 3.0 (Cronbach's alpha) was obtained, and all domains had good co-efficiency, with threshold above 0.70. Test-retest reliability of SIS 3.0 required correlation (Spearman's rho) of the same domain scores obtained on the first and second assessments. Results were above 0.5, with the exception of social participation and mobility. Concurrent validity of K-SIS 3.0 was assessed using the SF-36, and other scales with the same or similar domains. Each domain of K-SIS 3.0 had a positive correlation with corresponding similar domain of SF-36 and other scales (HADS, MMSE, and NIHSS). CONCLUSION: The newly developed K-SIS 3.0 showed high inter-intra reliability and test-retest reliabilities, together with high concurrent validity with the original and various other scales, for patients with stroke. K-SIS 3.0 can therefore be used for stroke patients, to assess their health-related quality of life and treatment efficacy.

Korean version of the Cough Symptom Score: clinical utility and validity for chronic cough

BACKGROUND/AIMS: The Cough Symptom Score (CSS) is a simple, useful tool for measuring cough severity. However, there is no standard Korean version of the CSS. We developed a Korean version of the CSS and evaluated its clinical utility and validity for assessing chronic cough severity. METHODS: The CSS was adapted for Korean use following a forward-backward translation procedure. Patients with chronic cough enrolled from five university hospitals were graded using the CSS and a 100-mm linear visual analog scale (VAS) of cough severity at each visit. Patients completed the Leicester Cough Questionnaire (LCQ) upon presentation and completed the LCQ and Global Rating of Change at follow-up visits after 2 to 4 weeks. The concurrent validity, repeatability, and responsiveness of the Korean version of the CSS were determined. RESULTS: Correlation coefficients between the CSS and LCQ, and between the CSS and VAS, were –0.66 and 0.52, respectively. There was a weak correlation between the scores for night and day symptoms (r = 0.24, p = 0.0006). The repeatability of the CSS in patients with no change in cough (n = 23) was high (intra-class correlation coefficient, 0.75; 95% confidence interval [CI], 0.51 to 0.88). Patients who reported an improvement in cough (n = 30) at follow-up visits had a significant improvement in the CSS (median, −2; 95% CI, −3 to −1; p = 0.0003). CONCLUSIONS: The Korean version of the CSS correlated well with other tools for accessing cough severity in chronic cough patients. Therefore, it could be a reliable method for measuring chronic cough severity.

Validation of the Korean version of Center for Epidemiologic Studies Depression Scale-Revised(K-CESD-R) / 정신신체의학

OBJECTIVES: The Center for Epidemiologic Studies Depression scale-Revised is a recently revised scale which has been reported as a valid tool for the assessment of depressive symptoms. It encompasses cardinal symptoms of depression described in the Diagnostic and Statistical Manual of Mental disorders, fourth edition. In this study, we assessed the reliability, validity and psychometric properties of the Korean version of the CESD-R(K-CESD-R). METHODS: Forty-eight patients diagnosed as major depressive disorder, dysthymia, depressive disorder NOS according to the DSM-IV criteria using Mini International Neuropsychiatric Interview and 48 healthy controls were enrolled in this study. They were assessed with K-CESD-R, K-MADRS, PHQ-9, KQIDS-SR, STAI to check cross-validation. Statistical analyses were performed using calculation of Cronbach's alpha, Pearson correlation coefficient, Principal Component Analysis, ROC curve and optimal cut-off value. RESULTS: The Cronbach's alpha of K-CESD-R was 0.98. The total score of K-CESD-R revealed significantly high correlations with those of K-MADRS, PHQ-9, KQIDS-SR(r=0.910, 0.966 and 0.920, p<0.001, respectively). Factor analysis showed two factors account for 76.29% of total variance. We suggested the optimal cut-off value of K-CESD-R as 13 according to analysis of the ROC curve which value sensitivity and specificity both equally. CONCLUSIONS: These Results showed that the K-CESD-R could be a reliable and valid scale to assess depressive symptoms. The K-CESD-R is expected as a useful and effective tool for screening and measuring depressive symptoms not only in outpatient clinic but also epidemiologic studies.

Single Photon Emission Computerized Tomography and Neuropsychological Tests That Predict a Good Response to Donepezil Therapy for Alzheimer's Disease

BACKGROUND AND PURPOSE: Cholinesterase inhibitors (ChEIs) are effective in Alzheimer's disease (AD) treatment. The aim of this study is 1) to find neuropsychological factors that affect the functional response to ChEI therapy and 2) to determine whether regional cerebral blood flow (rCBF) pretreatment predicts a cognitive change in response to ChEI. METHODS: We prospectively recruited 32 patients diagnosed with probable AD and treated them with donepezil, a ChEI, over one year. The patients were divided into stable (s-AD) and declined (d-AD) AD groups, based on changes in Korean version of Mini-Mental State Examination (K-MMSE) scores. Patients were assessed using the Alzheimer's Disease Co-operative Study-Activities of Daily Living (ADCS-ADL) and Seoul Neuropsychologic Screening Battery, as well as brain single photon emission computerized tomography (SPECT) at baseline and last medical evaluations. The predictors of therapeutic responses were analyzed using general linear models. RESULTS: Based on their cognitive function changes, AD patients were classified into two groups: s-AD (n=14, annual change in K-MMSE score or =0.9). The s-AD at baseline showed significantly better ADCS-ADL function (p=0.04) and had a tendency to preserve frontal function compared to the d-AD group. Global Statistical Parametric Mapping analysis revealed no significant decrease of rCBF between baseline and follow-up SPECT, in either the s-AD or the d-AD groups. However, on regional perfusion analysis of baseline SPECT, the d-AD group demonstrated perfusion deficits in the supramarginal gyrus, inferior occipital gyrus, and rolandic operculum compared with the s-AD group. CONCLUSIONS: Highly preserved ADCS-ADLs predicted a better improvement in MMSE scores in response to ChEI therapy and a more positive functional response in the group with preserved frontal function. rCBF provided hints to the variable response to donepezil therapy with ChEI treatment.

Pilot study on development of oral health literacy evaluation tool for Korean adults / 대한구강보건학회지

OBJECTIVES: Oral health literacy is defined as 'the degree to which individuals have the capacity to obtain, process, and understand basic oral health information and services needed to make an appropriate health decision'. This goal of this study was to develop an instrument for assessing oral health literacy in Korean adults. METHODS: This instrument was developed by using the adult literacy evaluation tool of the Korean Government. The components were mainly related to 2 conditions ('oral health information' and 'dental treatment instruction'), and they were classified into 3 cognitive processes (realistic, deductive, and critical domains). Furthermore, all of the subcomponents were divided into prose and non-prose. Therefore, each of the 12 subcomponents had 4 items, resulting in a final questionnaire with 48 items. A pilot survey was conducted in 51 adults, and the quality of the questionnaire was subsequently evaluated. We identified reliability by using Cronbach's alpha, discrimination, and difficulty. Two items from each of the 12 subcomponents were selected as the final items. We set the difference thresholds at over 0.5 and over 0.3 for reliability and discrimination, respectively. Finally, we distributed the difficulty from 35 to 95%. RESULTS: The reliabilities of all items (48) and the final items (24) were 0.838 and 0.836, respectively. The mean discrimination of the final items was higher than that of all items (mean: 0.5 and 0.3, respectively). The difficulty curve of the final items followed a normal distribution. CONCLUSIONS: The reliability and validity demonstrated by the final 24 items indicates that they are appropriate for evaluating oral health literacy in adults.

Analysis on Structural Variation and Disability Index of Spinal-Pelvic in the High School Students with Low Back Pain / 대한스포츠의학회지

The purpose of this study was to evaluate the prevalence rate of low back pain (LBP) in the high school students and to analyze the differences and correlations with the spinal-pelvic structural variations and disability index with LBP. The subjects are 499 high school students (236 males, 263 females: mean age, 16.38 years). They were assessed for LBP with the numerical rating scale (NRS) and for disability with the Korean version Oswestry disability index (KODI). All subjects were to take the plain radiographic examination for spinal-pelvic structural variations including thoracic, lumbar, thoracolumbar Cobb's angle, lumbar lordotic curve, sacral slope, pelvic tilt and pelvic incidence. All subjects were divided into two groups by NRS scores (0, 1=no/minimum pain group [NMP group], 2-10=low back pain group [LBP group]). The prevalence rate of LBP of all subjects was 56.7% (n=283). NRS and total KODI scores were higher in the LBP group (3.38 cm/11.83%) than NMP group (0.07 cm/2.74%) (p0.05). NRS had significantly positive correlation with KODI (p0.05). In conclusion, this study showed high prevalence rate of LBP in the high school students, but did not show significant correlations with the spinal-pelvic structural variations and disability index.

Development and Validation of the Korean Version of the Female Sexual Function Index-6 (FSFI-6K)

PURPOSE: To evaluate the validity and reliability of the Korean version of the Female Sexual Function Index-6 (FSFI-6K). MATERIALS AND METHODS: Participants were recruited from February 2013 to July 2013. The primary survey was conducted for 220 participants, and a follow-up was conducted 3 weeks (+/-1 week) after the primary survey. The FSFI-6K data were analyzed and compared to the reference values in the original FSFI. RESULTS: Of the 220 participants, 199 (90.5%) returned to follow-up, 18 (8.2%) had no further contact, and 3 (1.4%) declined to respond. The internal consistency of the FSFI-6K as measured by Cronbach's alpha was 0.888 and the reliability based on test-retest intraclass correlation was 0.606; these values were acceptable. The cutoff used for diagnosis of female sexual dysfunction by an receiver operating characteristics (ROC) curve was a score of 21; the sensitivity and specificity for this curve are 0.89 and 0.86, respectively. The area under the receiver operating curve was 0.948. CONCLUSION: The FSFI-6K has high internal consistency and acceptable reliability. This validated questionnaire can be used for the Korean population.

Olfactory Identification Test Using Familiar Distracters for Koreans

OBJECTIVES: Odors used in an odor identification test should be familiar to the subject, but there are some unfamiliar distracters in Korean version of Sniffin' stick (KVSS) II identification test. In this study, we used the results of the original version of KVSS II identification to modify the KVSS II identification test. METHODS: Eighty-three participants took an original version of KVSS II identification test and a visual analogue scale of subjective odor function. KVSS II identification which has 16 items was performed to choose one out of four odors items. And visual analogue scale was checked from 0 to 10 points of their subjective olfactory function. Two weeks later they took the modified version of KVSS II identification test. Hyposmic or anosmic patients were excluded. RESULTS: The mean score of the original version of KVSS II identification and modified version of KVSS II identification were 11.3 and 12.5, respectively (P<0.05). The KVSS II identification test and subjective olfactory function were positively correlated (r=0.247, P<0.05), as were the modified KVSS II identification test and subjective olfactory function (r=0.329, P<0.05). CONCLUSION: After modification of distracters, KVSS II identification test appears to be suited for assessment of olfactory function.