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Table 1

Racial/ethnic distribution of participants with type 1 diabetes in RCTs of diabetes technologies

Ref. no.First author, yearDiabetes technologyTotal population, NRace/ethnicity distribution, N (% of total population)
Non-Hispanic WhiteHispanic or LatinoNon-Hispanic BlackAsianOther
6  Breton, 2020 Control-IQ 101 82 (81.1) 8 (7.9) NR 11 (12) 
7  Brown, 2019+ Control-IQ 168 147 (87.5) 18 (10.7) NR NR NR 
8  Aleppo, 2017+ Dexcom G4 226 207 (91.5) 9 (4) 5 (2.2) 4 (1.7) NR 
9  Beck, 2017*+ Dexcom G4 75 65 (86.6) 2 (2.6) 5 (6.6) NR NR 
10  Feig, 2017#+ Medtronic Guardian 325 279 (85.8) NR NR NR NR 
11  Pratley, 2020+ Dexcom G5 203 187 (92) 5 (2.4) 6 (3) 1 (0.5) 2 (1) 
12  Forlenza, 2018 Basal-IQ and Dexcom G5 103 82 (79.6) 7 (6.8) 2 (1.9) 3 (2.9) 9 (8.8) 
13  Laffel, 2020+ Dexcom G5 153 95 (62) 33 (21.5) 12 (7.8) 6 (3.9) 6 (3.9) 
14  Kovatchev, 2020## Control-IQ 80## NR NR NR NR NR 
Total of participant race reported+ 1,354 1,144 (84.5) 82 (6) 30 (2.2) 14 (1) 28 (2) 
Ref. no.First author, yearDiabetes technologyTotal population, NRace/ethnicity distribution, N (% of total population)
Non-Hispanic WhiteHispanic or LatinoNon-Hispanic BlackAsianOther
6  Breton, 2020 Control-IQ 101 82 (81.1) 8 (7.9) NR 11 (12) 
7  Brown, 2019+ Control-IQ 168 147 (87.5) 18 (10.7) NR NR NR 
8  Aleppo, 2017+ Dexcom G4 226 207 (91.5) 9 (4) 5 (2.2) 4 (1.7) NR 
9  Beck, 2017*+ Dexcom G4 75 65 (86.6) 2 (2.6) 5 (6.6) NR NR 
10  Feig, 2017#+ Medtronic Guardian 325 279 (85.8) NR NR NR NR 
11  Pratley, 2020+ Dexcom G5 203 187 (92) 5 (2.4) 6 (3) 1 (0.5) 2 (1) 
12  Forlenza, 2018 Basal-IQ and Dexcom G5 103 82 (79.6) 7 (6.8) 2 (1.9) 3 (2.9) 9 (8.8) 
13  Laffel, 2020+ Dexcom G5 153 95 (62) 33 (21.5) 12 (7.8) 6 (3.9) 6 (3.9) 
14  Kovatchev, 2020## Control-IQ 80## NR NR NR NR NR 
Total of participant race reported+ 1,354 1,144 (84.5) 82 (6) 30 (2.2) 14 (1) 28 (2) 

NR, not reported.

*

The main study (n = 158) did not report racial distribution (15); therefore, we included this substudy.

+

Some studies have missing data on race/ethnicity.

#

This is a multinational study including U.S. sites.

##

This study was not included in the final analysis, as they did not report race/ethnicity.

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