VIDEOTAPE TIC COUNTS IN THE ASSESSMENT OF TOURETTES-SYNDROME - STABILITY, RELIABILITY, AND VALIDITY
VIDEOTAPE TIC COUNTS IN THE ASSESSMENT OF TOURETTES-SYNDROME - STABILITY, RELIABILITY, AND VALIDITY
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DOI：
10.1097/00004583-199403000-00013
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发表时间：
1994-03-01
影响因子：
13.3
通讯作者：
LECKMAN, JF
中科院分区：
文献类型：
--
作者：
CHAPPELL, PB;MCSWIGGANHARDIN, MT;LECKMAN, JF
目的：我们检查了抽搐计数的短期和长期时间稳定性，以估计整体抽搐活动的可靠指标所需的最小录像带长度，并确定了基于长录像带片段（>10分钟）的抽搐计数的评分者间信度和效度。方法：对43例7 ~ 50岁的抽动秽语综合征（TS）患者进行运动性和声音性抽搐计数及临床评分。通过测定20名受试者30分钟录像中连续等长片段的平均间期-间期相关性来估计短期稳定性。通过关联1周（N = 14）和2周（N = 11）间隔的抽搐计数确定长期稳定性。此外，抽搐计数与TS最广泛使用的临床评级相关。结果如下：短期稳定性数据表明，运动和语音抽搐频率的估计应基于至少5分钟的录像带计数。抽动次数也是高度可靠的，并且与耶鲁抽动严重程度量表和抽动秽语综合征临床总体印象量表的临床评分显著相关。结论：标准化的录像带抽动计数可以提供高度可靠、稳定的抽动频率测量，这些频率与抽动严重程度的选定全球评级中度相关。
Objective: We examined the short- and long-term temporal stability of tic counts to estimate the minimum length of videotape needed for a reliable index of overall tic activity and determined the interrater reliability and validity of tic counts based on prolonged videotape segments (>10 minutes). Method: Motor and phonic tic counts and clinician ratings were performed on 43 patients with Tourette's syndrome (TS), aged 7 to 50 years. Short-term stability was estimated by determining the mean interval-to-interval correlation of sequential equal-length segments from 30-minute videotape recordings of 20 subjects. Long-term stability was determined by correlating tic counts at 1-week (N = 14) and 2-week intervals (N = 11). In addition, tic counts were correlated with the most widely used clinical ratings of TS. Results: The short-term stability data indicated that estimates of motor and phonic tic frequencies should be based on videotape counts of at least 5 minutes' duration. Tic counts also were highly reliable and were significantly correlated with clinical ratings with the Yale Global Tic Severity Scale and the Clinical Global Impression Scale for Tourette Syndrome. Conclusions: Standardized videotape tic counts can provide highly reliable, stable measures of tic frequencies that are moderately correlated with selected global ratings of tic severity.