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Based on a previous validation of the instrument [ 17], the questionnaire was estimated to take about 30 minutes to complete.
A previous validation of spondyloarthritis at large, showed 98% of patients identified via the register to be valid spondyloarthritis patients [ 2].
A previous validation of a commercial L. biflexa antigen-based ELISA IgM assay in Peru showed a poor sensitivity and thus this species was avoided in the ELISA design [ 8].
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In a previous validation study of women with a family history of breast cancer, the intrusion and the avoidance sub-scales have been found to be highly consistent with Cronbach's coefficient alpha of 0.84 and 0.91 respectively, and a test-retest reliability of r=0.80 (Thewes et al, 2001).
A previous validation study of the surveillance system found that it missed 60% of ARI and fever episodes whereas the false reporting of ARI and fever episodes was just 1% [ 17].
A previous validation study of the 4DSQ for midwifery practice indicated that pregnant women respond differently to the items of the 4DSQ.
In a previous validation study of our cohort [30], we evaluated the potential for bias by comparing our subscriber list with self-reported information from 822 Danes participating as controls in a case control study of the possible association between brain tumour risk and use of mobile phones [31].
Thereafter, the dogs were placed in a respiration chamber as described in a previous validation study of the oCBT in dogs [ 20].
In a previous validation study of crystal structures in the Cambridge Structural Database, we showed that the quality of SX structures varied with time (Van de Streek, 2006 ▸).
In a previous study using the WOMAC to assess total knee replacement completion rates over 90% were found [ 27], and in a previous validation study of the KOOS in a younger population the completion rates was almost 100% (for 153 patients one subscale score could not be calculated due to missing data) [ 9].
Since this tool is considered a pre-screening tool, as opposed to a decision tool, and meant to provide a preliminary eligibility for study coordinators, ASAP does demonstrate functional ability for screening, based on a previous validation studies of the prediction tool, [ 37].
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com