Cross-cultural evaluation of the Panic Disorder Severity Scale in Japan

Yamamoto, Ikuyo; Nakano, Yumi; Watanabe, Norio; Noda, Yumiko; Furukawa, Toshi A; Kanai, Takayuki; Takashio, Osamu; Koda, Rumiko; Otsubo, Tempei; Kamijima, Kunitoshi

doi:10.1002/da.20029

Cited by 34 publications

(36 citation statements)

References 18 publications

(23 reference statements)

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“…Three of these reports [Kim, 2001;Monkul et al, 2004;Shear et al, 1997] concluded that the PDSS is most properly viewed as a two-factor measure, but the other two studies [Shear et al, 2001;Yamamoto et al, 2004] asserted that the single-factor model evidences better fit indices than did the two-factor model. Essentially, the results of both EFA and CFA have been discrepant.…”

Section: Introductionmentioning

confidence: 97%

“…Also, the psychometric properties of the non-English versions and the cross-cultural validity of the PDSS have been addressed in several studies [Kim, 2001;Monkul et al, 2004;Yamamoto et al, 2004]. In these studies, the PDSS evidenced adequate test-retest reliability, internal consistency, and good discriminant, concurrent, and criterion-related validities.…”

Section: Introductionmentioning

confidence: 97%

“…Two studies involving confirmatory factor analysis (CFA) techniques [Shear et al, 1997[Shear et al, , 2001] and three studies using exploratory factor analysis (EFA) techniques [Kim, 2001;Monkul et al, 2004;Yamamoto et al, 2004] have attempted to clarify the factor structure of the PDSS. Three of these reports [Kim, 2001;Monkul et al, 2004;Shear et al, 1997] concluded that the PDSS is most properly viewed as a two-factor measure, but the other two studies [Shear et al, 2001;Yamamoto et al, 2004] asserted that the single-factor model evidences better fit indices than did the two-factor model.…”

Section: Introductionmentioning

confidence: 99%

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Korean panic disorder severity scale: construct validity by confirmatory factor analysis

Lim

Kim

2007

Depress. Anxiety

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The Panic Disorder Severity Scale (PDSS) is a seven-item instrument used to rate the overall severity of panic disorder. This scale has previously evidenced excellent psychometric properties in a sample of patients with panic disorder, with or without agoraphobia. However, despite several factor-analytic PDSS studies, the number of factors has not been entirely consistent. Our objective in this study, then, was to evaluate the fit of two competing models to data collected with a sample of 176 patients with panic disorder. Patients (N = 176) who fulfilled DSM-IV criteria for panic disorder, with or without agoraphobia, underwent structured diagnostic assessments and PDSS interviews. Of the subjects, 102 were men and 74 were women. The mean age of the men was 41.2 (SD = 10.10) and of women, 41.0 (SD = 10.54). A model with two correlated factors was considered to be more appropriate in the description of the data with the following indices: Tucker-Lewis index = 0.94, comparative fit index = 0.96, root-mean-square error of approximation=0.08, and standardized root-mean-square residual = 0.04. These results were then cross-validated with subgroups of patients with panic disorder with agoraphobia (n = 128), without agoraphobia (n = 48), and with panic disorder after phamacotherapy (n = 62). Our results indicated that the correlated two-factor model developed and validated using Western samples could be appropriately generalized to Korean clinical samples. Furthermore, our results support the construct validity of the Korean version of the PDSS.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Korean panic disorder severity scale: construct validity by confirmatory factor analysis

Lim

Kim

2007

Depress. Anxiety

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“…15 This scale has sufficiently high reliability, with a Cronbach α of 0.86; a total score > 16 corresponds to severe panic disorder in the Japanese version. 16 Subjective sleep conditions were assessed using the self-rating Pittsburgh Sleep Quality Index (PSQI). 17 The PSQI is an effective instrument to evaluate subjective sleep disturbance by measuring 7 domains.…”

Section: Measurementsmentioning

confidence: 99%

“…ANOVA revealed significant differences among groups for the reduction rate in PDSS score DP, day panic group; DP/NP, day panic and nocturnal panic group; NP, nocturnal panic group. The dose equivalents of psychotropic drugs were calculated according to the report by Inagaki A et al 16 The doses of antidepressants are presented in mg basis of imipramine, and those of anxiolytics and hypnotics are presented in mg basis of diazepam. a vs DP, b vs NP, *p < 0.05, **p < 0.01.…”

Section: Medications and Treatment Responsementioning

confidence: 99%

Is Nocturnal Panic a Distinct Disease Category? Comparison of Clinical Characteristics among Patients with Primary Nocturnal Panic, Daytime Panic, and Coexistence of Nocturnal and Daytime Panic

Nakamura

Sugiura

Nishida

et al. 2013

Journal of Clinical Sleep Medicine

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to an increased risk of suicide compared with those without NP. 11However, these comparisons were mainly made on patients with DP/NP and those with primary DP. Meanwhile, one study that included both primary NP and DP/NP demonstrated no differences between NP and primary DP in terms of frequency of comorbid depression.12 Thus, the clinical signifi cance of primary NP as well as that of DP/NP remains unclear, although it is possible that the latter is a severe subcategory of PD.This study set out to compare clinical characteristics including demographic variables, panic symptom items, severity of Objective: Many patients with panic disorder (PD) experience nocturnal panic attacks. We investigated the differences in demographic variables and symptom characteristics as well as response to treatment among patients with primary day panic (DP), primary nocturnal panic (NP), and the coexistence of DP and NP (DP/NP), and discuss whether NP is a distinct disease category. Method: One hundred one consecutive untreated patients with PD were enrolled and subsequently divided into the NP, DP, and DP/NP groups. The presence of 13 panic attack symptom items as well as scores on the Panic Disorder Severity Scale (PDSS) and the Pittsburgh Sleep Quality Index (PSQI) were compared among the groups. After 3 months of regular treatment, PDSS scores were assessed again to evaluate treatment response. Results: Nocturnal panic attacks of the participants were mostly reported to occur in the fi rst tertile of nocturnal sleep. The number of males, onset age, and presence of choking sensation were signifi cantly higher, and the PDSS score was signifi cantly lower in the NP group compared with the other groups. The DP/NP group showed the highest PDSS score, and participants in this group were prescribed the highest doses of medication among all groups. Only diagnostic subcategory was signifi cantly associated with treatment response. The total score for PDSS and PSQI correlated signifi cantly only in the NP group. Conclusions: DP/NP could be a severe form of PD, while primary NP could be a relatively mild subcategory that may partially share common pathophysiology with adult type night terror. S C I E N T I f I C I N V E S T I g A T I O N SP anic disorder (PD) is an anxiety disorder characterized by recurrent daytime panic (DP) attacks (primary DP).1 However, some patients who fulfi ll the clinical criteria for PD experience panic attacks mainly during the nocturnal sleep period. 2-4These nighttime attacks occur without any obvious triggers during periods of sleep-wake transition and are referred to as nocturnal panic (NP) attacks. 5 In general, 18% to 45% of PD patients experience both DP and NP attacks (DP/NP).6,7 Meanwhile, there are a considerable number of patients who have panic attacks only during the nocturnal sleep period (primary NP). However, most previous reports have not mentioned the clinical characteristics of primary NP, except for one report in which the response to pharmaceutical treatment in such patients was discussed....

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Psychometric properties of the panic disorder severity scale: clinician‐administered and self‐report versions

Wuyek

Antony

McCabe

2011

Clin Psychology and Psychoth

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The Panic Disorder Severity Scale (PDSS) is a seven-item scale designed to assess overall severity of panic disorder symptoms. Although the PDSS is widely used, there have been limited independent studies confirming reliability and validity, particularly of the self-report version of the PDSS, and even fewer studies directly comparing the two versions. Given the need for psychometrically sound measures that comprehensively assess the main features of panic disorder, this study examined the psychometric properties of both the clinician-administered and self-report versions of the PDSS. As the PDSS targets symptom severity across a number of specific domains, PDSS items were compared to several scales designed to measure similar constructs, including the Anxiety Sensitivity Index, Illness Intrusiveness Ratings Scale, Mobility Inventory for Agoraphobia and Agoraphobic Cognitions Questionnaire. Results indicated acceptable reliability for both the clinician-administered and self-report versions. Results indicated acceptable validity for the clinician-administered PDSS and promising validity for the self-report. However, correlations between both versions of the PDSS and comparison measures were lower than predicted. Results also indicated that scores on the self-report and clinician-administered versions were significantly associated, although correlations between specific PDSS items on the two versions were also lower than expected. Results suggest that total scores on each of the PDSS versions provide a useful indication of panic-related severity. However, clinicians and researchers are cautioned against relying on scores from individual items to measure specific constructs due to their poor specificity.

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Cross-cultural evaluation of the Panic Disorder Severity Scale in Japan

Cited by 34 publications

References 18 publications

Korean panic disorder severity scale: construct validity by confirmatory factor analysis

Korean panic disorder severity scale: construct validity by confirmatory factor analysis

Is Nocturnal Panic a Distinct Disease Category? Comparison of Clinical Characteristics among Patients with Primary Nocturnal Panic, Daytime Panic, and Coexistence of Nocturnal and Daytime Panic

Psychometric properties of the panic disorder severity scale: clinician‐administered and self‐report versions

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