. 2020 Dec 24;10(3):100713. doi: 10.1016/j.imr.2020.100713

Table 4.

Validation of measurement properties among included Traditional Chinese Medicine diagnostic instruments.

	FGIDS³¹	FGDDI³²	Amended-FGDDI³⁵	CMFDS³³	SSQD³⁴

Content validity	Not validated	Not validated	Not validated	Not validated	Not validated
Structural validity	Validated	Validated	Validated	Not validated	Not validated
Internal consistency	Not validated	Not validated	Not validated	Not validated	Validated
Cross-cultural validity	Not validated	Not validated	Not validated	Not validated	Not validated
Measurement invariance	Not validated	Not validated	Not validated	Not validated	Not validated
Test-retest reliability	Not validated	Not validated	Not validated	Validated	Not validated
Measurement error	Not validated	Not validated	Not validated	Not validated	Not validated
Criterion validity	Not validated	Not validated	Not validated	Validated	Validated
Construct validity	Not validated	Not validated	Not validated	Not validated	Not validated
Responsiveness	Not validated	Not validated	Not validated	Not validated	Not validated

FGIDS: Traditional Chinese Medicine Functional Gastrointestinal Disorders Scale; FGDDI: Traditional Chinese Medicine Syndrome Differentiation Instrument for Functional Gastrointestinal Disorders; Amended-FGDDI: Traditional Chinese Medicine Syndrome Differentiation Instrument for Functional Gastrointestinal Disorders (Amended); CMFDS: Traditional Chinese Medicine Functional Dyspepsia Scale; SSQD: Stomach Qi Deficiency Pattern Assessment Scale