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. 2021 Jun 29;12:673434. doi: 10.3389/fpsyg.2021.673434

Table 1.

Quarterly distribution (“n” and “%”) of birthdates by competition level and biannual competition cycle.

BCC Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8
n(%) n(%) n(%) n(%) n(%) n(%) n(%) n(%)
Formative categories (U-18/U-19 and U-20/U-21)
2005-06 4(13.3) 4(13.3) 5(16.7) 3(10.0) 7(23.3) 2(6.7) 4(13.3) 1(3.3)
2007-08 11(18.0) 13(21.3) 11(18.0) 10(16.4) 2(3.3) 6(9.8) 3(4.9) 5(8.2)
2009-10 18(29.5) 8(13.1) 7(11.5) 9(14.8) 3(4.9) 4(6.6) 3(4.9) 9(14.8)
2011-12 9(19.1) 3(6.4) 7(14.9) 10(21.3) 4(8.5) 7(14.9) 4(8.5) 3(6.4)
2013-14 8(26.7) 4(13.3) 5(16.7) 3(10.0) 4(13.3) 3(10.0) 2(6.7) 1(3.3)
2015-16 8(12.9) 12(19.4) 7(11.3) 6(9.7) 11(17.7) 6(9.7) 7(11.3) 5(8.1)
2017-18 8(12.7) 12(19.0) 11(17.5) 9(14.3) 6(9.5) 6(9.5) 6(9.5) 5(7.9)
2019-20 5(15.2) 8(24.2) 6(18.2) 5(15.2) 4(12.1) 0(0) 1(3.0) 4(12.1)
Senior category
2005-06 5(31.3) 5(31.3) 3(18.8) 3(18.8) - - - -
2007-08 13(40.6) 9(28.1) 6(18.8) 4(12.5) - - - -
2009-10 10(31.3) 9(28.1) 5(15.6) 8(25.0) - - - -
2011-12 9(28.1) 8(25.0) 6(18.8) 9(28.1) - - - -
2013-14 10(30.3) 9(27.3) 4(12.1) 10(30.3) - - - -
2015-16 12(37.5) 8(25.0) 3(9.4) 9(28.1) - - - -
2017-18 12(36.4) 4(12.1) 8(24.2) 9(27.3) - - - -
2019-20 9(26.5) 5(14.7) 9(26.5) 11(32.4) - - - -

BCC,” biannual competition cycle; “Q1-Q4/Q8,” birth quarter.