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G Li
Dr G Li, China-Japan Friendship Hospital, Beijing, China; guangwei_li@medmail.com.cn
STUDY DESIGN
Design:
cluster randomised controlled trial (China Da Qing Diabetes Prevention Outcomes Study [CDQDPOS]).
Allocation:
unconcealed.*
Blinding:
blinded (data collectors and outcome adjudicators).*
STUDY QUESTION
Setting:
33 clinics in Da Qing, China.
Patients:
577 adults (mean age 46 y, 54% men) with impaired glucose tolerance.
Interventions:
1 of 3 group-based lifestyle interventions for 6 years: diet (to increase vegetable intake, lower alcohol and sugar intake, and reduce weight if indicated), exercise (to increase leisure-time physical activity), or diet plus exercise (n = 438, 3 groups pooled); or usual care (n = 138).
Outcomes:
diabetes, cardiovascular disease (CVD) event (myocardial infarction, stroke, sudden death, or amputation), CVD mortality, and all-cause mortality.
Patient follow-up:
94–98% (intention-to-treat analysis). …
Footnotes
Source of funding: no external funding.