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Table 2 Results from multivariable logistic regression analysis for the relationship between trial characteristics and high-enrollment of BIPOC groups

From: Twenty-year trends in racial and ethnic enrollment in large diabetes randomized controlled trials

Trial factors

OR (95%CI)

P

Year of publication

 2000–2009

Ref

-

 2010–2020

1.75 (0.95, 3.22)

0.074

Sample size ≥ 716a

0.98 (0.64, 1.51)

0.944

Diabetes type

 Other

Ref

-

 Type 2 diabetes

1.44 (1.04, 1.99)

0.027

Enrollment location

 Other

Ref

-

 Ambulatory

0.55 (0.27, 1.12)

0.097

Random type

 Cluster

Ref

-

 Individual

1.00 (0.15, 6.69)

0.998

Trial primary objective

 Complication

Ref

-

 Glucose control

1.48 (0.75, 2.89)

0.256

 Management or mixed

0.86 (0.48, 1.57)

0.628

Intervention

 Type of intervention

  Others

Ref

-

  Medication

0.82 (0.38, 1.77)

0.617

 Frequency of intervention

  Others

Ref

-

  Weekly/daily

0.48 (0.26, 0.91)

0.024

 Duration of intervention > 6.5 montha

0.59 (0.37, 0.95)

0.030

Follow-up

 Type of follow-up

  Others

Ref

-

  Face-to-face

0.71 (0.41, 1.23)

0.221

 Frequency of follow-up

  Other

Ref

-

  Weekly/monthly

1.28 (0.62, 2.66)

0.503

 Duration of follow-up > 12 monthsa

1.45 (0.88, 2.38)

0.147

Funding source

 Non-industry

Ref

-

 Industry

0.86 (0.49, 1.53)

0.614

  1. aThe cut-off point was determined by using the median value
  2. Ref reference category/level