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. 2014 Jan;133(1):78–87. doi: 10.1542/peds.2013-2567

TABLE 1.

Number of Pediatric Trials and Participants and Pediatric Burden of Disease by Country Income Level

All Trials (N = 5373) RCTs (n = 3771) Drug RCTs (n = 1526) Randomized Participants (n = 1 466 689) Burden of Disease in DALYs
n % n % n % n %a,b n %
High-income countries 4261 79 2882 76 1176 77 889 448 61 13 569 772 2
Middle-income countries 746 14 568 15 225 15 260 879 18 147 338 773 25
Low-income countries 366 7 321 8 125 8 316 362 21 439 382 261 73
a

Excluding subjects enrolled in trials with cluster randomization.

b

Enrollment figures missing for 5 trials: 1 in middle-income level and 2 each in high- and low-income levels.