Cho 2011b.

Study characteristics
Methods	Effects on diabetes management of a health‐care provider mediated, remote coaching system via a PDA‐type glucometer and the internet Patient RCT, conducted in 6 healthcare posts associated with Chung‐Ju City (about 150 km from Seoul), South Korea Two arms: 1) Control group (control arm) and 2) Intervention group (intervention arm)
Participants	Control arm N: 35 Intervention arm N: 36 Diabetes type: type 2 Mean age: NR ± NR % Male: NR Longest follow‐up: 3 months
Interventions	Control arm: 1) Patient education Intervention arm: 1) Team changes 2) Facilitated relay of clinical information 3) Patient education
Outcomes	1) HbA1c, mean % (SD) Control arm: pre 8.0 (1.0), post 7.8 (1.1) Intervention arm: pre 8.0 (0.8), post 7.5 (0.9)
Funding source	The study was funded by the Seoul R&D Project
Notes	—
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Quote: "…using a table of random numbers."
Allocation concealment (selection bias)	Unclear risk	Not described.
Patient's baseline characteristics (selection bias)	Low risk	Quote: "The baseline characteristics of the two groups were similar except for blood pressure…"
Patient's baseline outcomes (selection bias)	High risk	SBP (P < 0.001); DBP (P = 0.002).
Incomplete outcome data (attrition bias)	High risk	Approximately 11% dropout rate in intervention group, and reasons not provided for losses to follow‐up.
Blinding of participants and personnel (performance bias) and of outcome assessors (detection bias)	Unclear risk	Blinding not described, HbA1c objective laboratory methods not described.
Selective reporting (reporting bias)	High risk	Secondary outcome listed in protocol, not listed in paper.
Risk of contamination (other bias)	Low risk	Information not available.
Other bias	Low risk	Information not available.