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Trade receivables (Tables)
 12 Months Ended
Dec. 31, 2021
Schedule of trade accounts receivable, net and notes receivable

 

  2021 2020
     
Tuition fees 279,915 195,318
Educational content (a) 69,227 62,931
FIES 61,342 49,425
Educational credits 5,375 11,248
Mobile app subscription (b) 20,946 13,526
Others 14,001 10,476
  450,806 342,924
(-) Allowance for doubtful accounts (45,013) (32,980)
  405,793 309,944
Current 378,351 302,317
Non-current 27,442 7,627

 

(a)Related to trade receivables from sales of printed books, e-books and medical courses through digital platform from Medcel.
(b)Related to trade receivables from mobile applications subscriptions for digital medical content.
Schedule of aging of trade accounts receivable

As of December 31, 2021 and 2020, the aging of trade receivables was as follows:

 

  2021 2020
     
Neither past due nor impaired 184,382 145,076
Past due    
1 to 30 days 68,932 44,365
31 to 90 days 69,299 57,198
91 to 180 days 55,764 51,521
More than 180 days 72,429 44,764
  450,806 342,924
Schedule of allowance for doubtful accounts

The changes in the allowance for doubtful accounts for the years ended December 31, 2021, 2020 and 2019, was as follows:

 

  2021 2020 2019
       
Balances at the beginning of the period (32,980) (14,763) (7,537)
Additions (47,819) (32,081) (15,040)
Write-offs 35,786 13,864 7,814   
Balances at the end of the period (45,013) (32,980) (14,763)