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Table 3 Study events and activities

From: Do mobile phone-based reminders and conditional financial transfers improve the timeliness of childhood vaccinations in Tanzania? Study protocol for a quasi-randomized controlled trial

  Arm 1
(standard of care)
Arm 2
(reminders only)
Arm 3
(reminders + incentive)
Pregnancy Recruitment and enrollment during the last trimester (EDD within 3 months). In-person baseline survey
Birth   Phone-based documentation of birth date and birth outcome within 14 days of EDD
Vaccination V0
At birth (t 0 )
BCG
OPV(0)
  Phone-based confirmation of V0 visit at t0+14d. If not vaccinated, follow up every 14 days
Updates to t6w, t10w, and t14w as needed
  Full amount if V0 visit by t0+14d
Half amount if V0 visit between t0+14d and t0+28d
None after t0+28d
Vaccination V1
6 weeks (t6w)
OPV(1)
Penta(1)
PCV(1)
Rota(1)
  Reminders at t6w-7d and t6w-1d
Phone-based confirmation of V1 visit at t6w+14d. If not vaccinated, follow up every 14 days
Updates to t10w and t14w as needed
  Full amount if V1 visit by t6w+14d
Half amount if V1 visit between t6w+14d and t6w+28d
None after t6w+28d
Vaccination V2
10 weeks (t 10w )
OPV(2)
Penta(2)
PCV(2)
Rota(2)
  Reminders at t10w-7d and t10w-1d
Phone based confirmation of V2 visit at t10w+14d. If not vaccinated, follow up every 14 days.
Updates to t14w as needed
  Full amount if V2 visit by t10w+14d
Half amount if V2 visit between t10w+14d and t10w+28d
None after t10w+28d
Vaccination V3
14 weeks (t14w)
OPV(3)
Penta(3)
PCV(3)
  Reminders at t14w-7d and t14w-1d
Phone based confirmation of V3 visit at t14w+14d. If not vaccinated, follow up every 14 days.
  Full amount if V3 visit by t14w+14 days
Half amount if V3 visit between t10w+14d and t10w+28d
None after t14w+28d
Exit survey In-person survey to assess barriers to vaccinations, acceptability of reminders (arms 2 and 3) and incentives (arm 3), and document vaccination coverage and timeliness using government-issued vaccination cards
  1. Abbreviations: EDD = expected date of delivery; w = weeks; d = days; t = time; BCG, OPV, Penta, PCV, Rota: see Table 1