Table 2.

Cochrane Collaboration’s tool risk-of-bias assessment for the clinical outcomes (hemoglobin A_1c and self-monitoring blood glucose changes) of the included study papers.

	Castensøe-Seidenfaden [12]	Cafazzo [13]	Goyal [14]	Kirwan [15]	Clemens [16]	Ryan [17]
Random sequence generation	Low	High	Low	Low	High	High
Allocation concealment	Low	High	Low	Low	High	Low
Blinding of participants and personnel	N/Aa	N/A	N/A	N/A	N/A	N/A
Blinding of outcome assessment	Low	High	High	Low	High	Unclear
Incomplete outcome data	Low	Low	Low	High	Low	Low
Selective reporting	Low	Low	Low	High	Low	Low
Other bias	Low	Unclear	Low	Unclear	Unclear	Low

^aN/A: not applicable (both patient and doctors know the group they are allocated).