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Passive roary dynamic sitting at the workplace by office
CONSORT 清单评价RCT论文
论文
部分 条 目 内 容 评 价 VAS 文题
摘要 1a 文题能识别是随机临床试验 Passive rotary dynamic sitting at the workplace by office-workers
with lumbar pain: a randomized multicenter study 是 1b 结构式摘要，包括试验设计、方法、结果、结论几个部分 BACKGROUND CONTEXT: It is generally recognized that long periods of sitting can either
cause or aggravate lumbar pain. A new, ergonomically designed chair has a fixed backrest and a
motor-driven seat with a horizontal rotary movement in alternating left-right cycles.
PURPOSE: The objective of this study is to prove superiority of the new technique of passive ro-tary dynamic sitting for subjects working in a sedentary occupation and suffering from lumbar pain.
STUDY DESIGN/SETTING: A randomized, double-blind, multicenter, two-armed study was
performed using a parallel group design.
PATIENT SAMPLE: 280 persons suffering from lumbar pain were matched pairwise and ran-domized en bloc.
OUTCOME MEASURES: The first and second primary endpoints target criteria were the vali-dated German version of the Oswestry Disability Index (ODI) and the number of days of absence
from work (DA) attributable to lumbar pain, each based on a blinded 2-year follow-up observation
after randomization of the subjects.
METHODS:After inclusion in the study anonymization, the probands were randomized to receive
either an office chair with a motor-driven seat performing a horizontal rotary movement or a chair
of the same design without the rotary seat movement. Before delivery of the chairs, 23 probands
(8.2%) withdrew their consent to inclusion in the study without stating reasons. From 12 of the re-maining matching partners, 23 new pairs were created at random, and the study commenced with
124 pairs.
RESULTS: A further 27 probands (9.6%) were lost to follow-up during the period up to the final
consultation. This made it possible to observe the primary endpoint in 82.5% of the probands. The
median ODI in both groups was 53 (95% confidence interval for median difference: 1.5 to 0.5;
p
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