SAGE Day Reconstruction Method Validation Study 2007

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Reference ID

IND_2007_SAGE-DRMVS_v01_M

Producer(s)

Dr MATHUR, Arvind

Metadata

Documentation in PDF DDI/XML JSON

Created on

May 19, 2023

Last modified

May 19, 2023

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21468

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q4009: days in pain (q4009)

Valid: 792

Invalid: 768

Minimum: 0

Maximum: 30

Mean: 17.034

Standard deviation: 9.066

Type: Continuous

Decimal: 0

Width: 8

Range: 0 - 30

Format: Numeric

Literal question

On how many days did you have this back pain during the last 30 days?

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