One study across web, field, phone, SMS, IVR, email, QR, and kiosk
Use one questionnaire and shared dataset while tailoring presentation, contact strategy, accessibility, and interviewer workflow to each collection mode.
Global Service Access Study
Build once, deploy in the mode that reaches the respondent
CAWI web
Responsive browser surveys, embeds, QR collectors, authenticated links, and low-data experiences.
CATI
Interviewer scripts, callback windows, dispositions, call attempts, language routing, and supervisor monitoring.
SMS
Send links or run conversational text questions on basic phones with opt-out and response tracking.
IVR
Deliver recorded or synthesized voice prompts with keypad responses, replay, multilingual routing, and retries.
Do not assume every mode produces identical answers
SierraTec can compare distributions by mode and flag questions where telephone, web, field, or private self-administration produce materially different patterns.
Trust in local services
Review weighting, respondent selection, social desirability, and question presentation before combining estimates.
Coordinate attempts without over-contacting people
- Preferred language and time zone
- Phone, SMS, email, and in-person consent status
- Attempt history and final disposition
- Callback scheduling
- Do-not-contact and suppression status
- Channel-level completion and cost metrics
Reach the population, not just the inbox
Use mixed-mode collection when web-only recruitment would under-cover the people your decision needs to represent.