Table 2 PROM usage and translations available in the multi-national studies

Armstrong et al. [19]

17 (3) USA, Canada, and UK

Secondary

FKSI-15^a

35 (Hindi, Chinese, Arabic, Thai)

No

Yao et al. [20]

97 (25) Europe, Japan, South Korea

Secondary

FACT-G^b

71 (Italian, Japanese, Korean)

No

Schöffski et al., primary paper [21]

Hudgens et al., quality of life paper [22]

110 (22) USA, Western Europe, Asia, Eastern Europe

Exploratory

QLQ C-30^a

EQ-5D^a

93 (Spanish, Hindi, Mandarin)

180 (Spanish, Thai, Malaysian)

No

O’Shaughnessy et al. [23]

Approximately 65 North America, Europe, and Asia

Secondary

EORTC-C30^b

EQ-5D-5L^b

BPI-SF^b

99 (Bengali, Malay, Mandarin)

170 (Spanish, Serbian, Simplified Chinese)

52 (Simplified Chinese, Malay, French)

No

Senan et al. [24]

125 (21) NS

Secondary

Swallowing diary^b

Not known

No

Ryan et al. [25]

113 (19) NS

Secondary

EORTC QLQ-C30^b

EQ-5D^b

99 (Bengali, Malay, Mandarin)

180 (Spanish, Thai, Malaysian)

No

Verma et al., primary paper [26]

Welslau et al., secondary paper [27]

213 (26) Uk, South Korea, Germany

Secondary

Exploratory

FACT-B – TOI-PFB^a [26, 27]^a

DAS^a [27]^a

56 (Urdu, Afrikaans, Hindi)

(not known)

Consent form and other written information translated (when applicable)^b

Escudier et al. [28]

Multi-centre, (NS)

Secondary

Exploratory

FACIT-Fatigue^a

EQ-5D^a

SQLQ^a

Bespoke questionnaire adapted from OMDQ

64 (Vietnamese, Punjabi, Chinese)

180 (Spanish, Thai, Malaysian)

Not known

Not known

No