Table 1.

Detailed search strategy in databases: MEDLINE, EMBASE and SCOPUS

MEDLINE (Ovid SP)	EMBASE (Ovid SP)	SCOPUS
exp osteocalcin osteocalcin.mp bone gla protein.mp vitamin k?dependent bone protein*.mp 1 or 2 or 3 or 4 exp diabetes mellitus, Type 2/II diabetes mellitus type 2/II.mp (T2D* or NIDDM or ‘type 2’ or ‘type II’).tw (non insulin$ depend$ or nonsinulin$depend$ or non insulin?depend$ or noninsulin?depend$).tw exp Hyperglycemia hyperglycemia.mp hypergly?emi*.tw exp Hemoglobin A/or exp Hemoglobin A, Glycosylated HbA1c.mp (‘HbA(1 c)’ or HbA1c or ‘HbA 1 c’ or (glycosylated or glycated) adj h?emoglobin)).tw 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 5 and 16 limit 17 to humans	exp osteocalcin osteocalcin.mp bone gla protein.mp vitamin k?dependent bone protein*.mp 1 and 2 and 3 and 4 exp non insulin dependent diabetes mellitus exp diabetes mellitus 2/II (T2D* or NIDDM or ‘type 2’ or ‘type II’).tw (prediabet* or pre diabet*).tw hyperglyc?emi*.tw 6 or 7 or 8 or 9 or 10 5 and 11 limit 13 to (human and exclude medline journals)	(KEY (’osteocalcin') OR KEY (’bone AND gla AND protein') OR KEY (’bone AND turnover AND markers')) AND (KEY (’diabetes AND mellitus') OR KEY (’hemoglobin AND a1c') OR KEY (’fasting AND plasma AND glucose')) AND KEY (’human') AND (LIMIT-TO (DOCTYPE, ‘ar’))