Are SMS vouchers or posted vouchers more effective for increasing response rates in a work-related survey in people with persistent pain?

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN93103453

Enrollment

Registered

2022-07-25

Start date

2022-06-15

Completion date

Unknown

Last updated

2024-05-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pain Injury, Occupational Diseases, Poisoning

Interventions

Current interventions, as of 17/01/2023: We will study the follow-up rate at three months for people enrolled in a cohort randomised study (ISRCTN85437524) and who are offered vouchers to participat

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Participants in cohort randomised trial ISRCTN85437524

Exclusion criteria

Exclusion criteria: Participants not in ISRCTN85437524

Design outcomes

Primary

Measure	Time frame
Current primary outcome measure as of 17/01/2023: Follow-up response rate, measured using the number of three-month follow-up questionnaires received divided by the number of baseline measurements received. _____ Previous primary outcome measure: Follow-up response rate, measured using the number of three-month follow-up questionnaires received divided by the number of baseline measurements sent at three-months	—

Measure

Time frame

Current primary outcome measure as of 17/01/2023: Follow-up response rate, measured using the number of three-month follow-up questionnaires received divided by the number of baseline measurements received. _____ Previous primary outcome measure: Follow-up response rate, measured using the number of three-month follow-up questionnaires received divided by the number of baseline measurements sent at three-months

—

Secondary

Measure	Time frame
Current secondary outcome measures as of 17/01/2023: Follow-up response rates, measured using the number of six- and 12-month follow-up questionnaires received divided by the number of baseline questionnaires, may be subsequently conducted. _____ Previous secondary outcome measures: Follow-up response rates, measured using the number of six- and 12-month follow-up questionnaires received divided by the number of baseline questionnaires sent at six- and 12-months	—

Measure

Time frame

Current secondary outcome measures as of 17/01/2023: Follow-up response rates, measured using the number of six- and 12-month follow-up questionnaires received divided by the number of baseline questionnaires, may be subsequently conducted. _____ Previous secondary outcome measures: Follow-up response rates, measured using the number of six- and 12-month follow-up questionnaires received divided by the number of baseline questionnaires sent at six- and 12-months

—

Countries

Norway

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026