Received: 20 June 2021
Accepted: 31 January 2022
First Online: 17 February 2022
: This is a cross-sectional study and a secondary data analysis so consent to participate was not required according to spanish legislation. The Spanish National Institute of Statistics (INE) and its Ethics Committe approved this data to be published (reference number PB063/2021). All data obtained by the INE was de-identified so participants’privacy and confidenciality are protected. Permission to access data was granted by INE. (see document attached).All authors declare that this research was performed according to the ethical principles from the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.