Table 5.
Birthdate distribution for female and male soccer and futsal players in Portuguese National Teams.
| National team | Birthdate distribution, n (%) | χ2 | FDR-adjusted p | ||||
|---|---|---|---|---|---|---|---|
| n | Q1 | Q2 | Q3 | Q4 | |||
| Female | |||||||
| RP (1979–2006) | 1,589,225 | 386,041 (24.3) | 400,367 (25.2) | 410,601 (25.8) | 392,216 (24.7) | ||
| Soccer | |||||||
| U15 | 56 | 19 (33.9) | 17 (30.4) | 14 (25.0) | 6 (10.7) | 7.17 | 0.144 |
| U16 | 91 | 23 (25.3) | 30 (33.0) | 21 (23.1) | 17 (18.7) | 3.81 | 0.430 |
| U17 | 82 | 26 (31.7) | 23 (28.0) | 17 (20.7) | 16 (19.5) | 3.84 | 0.430 |
| U19 | 81 | 25 (30.9) | 19 (23.5) | 20 (24.7) | 17 (21.0) | 2.03 | 0.567 |
| AA | 57 | 6 (10.5) | 23 (40.4) | 17 (29.8) | 11 (19.3) | 10.66 | 0.034 |
| RP (1984–2007) | 1,345,949 | 326,583 (24.3) | 336,699 (25.0) | 348,914 (25.9) | 333,753 (24.8) | ||
| Futsal | |||||||
| U17 | 30 | 10 (33.3) | 9 (30.0) | 6 (20.0) | 5 (16.7) | 2.52 | 0.664 |
| U18 | 14 | 7 (50.0) | 3 (21.4) | 1 (7.1) | 3 (21.4) | 5.86 | 0.227 |
| U19 | 28 | 12 (42.9) | 7 (25.0) | 4 (14.3) | 5 (17.9) | 6.00 | 0.224 |
| AA | 36 | 10 (27.8) | 11 (30.6) | 7 (19.4) | 8 (22.2) | 1.30 | 0.830 |
| Male | |||||||
| RP (1978–2006) | 1,864,240 | 451,770 (24.2) | 473,909 (25.4) | 480,733 (25.8) | 457,828 (24.6) | ||
| Soccer | |||||||
| U15 | 79 | 44 (55.7) | 20 (25.3) | 9 (11.4) | 6 (7.6) | 47.88 | <0.001 |
| U16 | 122 | 68 (55.7) | 33 (27.0) | 14 (11.5) | 7 (5.7) | 77.38 | <0.001 |
| U17 | 114 | 61 (53.5) | 37 (32.5) | 11 (9.6) | 5 (4.4) | 72.94 | <0.001 |
| U18 | 131 | 58 (44.3) | 42 (32.1) | 19 (14.5) | 12 (9.2) | 43.10 | <0.001 |
| U19 | 147 | 63 (42.9) | 44 (29.9) | 25 (17.0) | 15 (10.2) | 38.94 | <0.001 |
| U20 | 120 | 46 (38.3) | 34 (28.3) | 23 (19.2) | 17 (14.2) | 17.56 | 0.002 |
| U21 | 80 | 32 (40.0) | 21 (26.3) | 12 (15.0) | 15 (18.8) | 12.94 | 0.013 |
| AA | 61 | 13 (21.3) | 14 (23.0) | 14 (23.0) | 20 (32.8) | 2.23 | 0.683 |
| RP (1979–2005) | 1,723,059 | 417,166 (24.2) | 437,945 (25.4) | 444,923 (25.8) | 423,025 (24.6) | ||
| Futsal | |||||||
| U17 | 70 | 19 (27.1) | 29 (41.4) | 9 (12.9) | 13 (18.6) | 12.89 | 0.013 |
| U18 | 26 | 6 (23.1) | 12 (46.2) | 4 (15.4) | 4 (15.4) | 6.40 | 0.196 |
| U19 | 53 | 14 (26.4) | 25 (47.2) | 7 (13.2) | 7 (13.2) | 16.02 | 0.003 |
| U21 | 48 | 12 (25.0) | 18 (37.5) | 10 (20.8) | 8 (16.7) | 4.45 | 0.362 |
| AA | 34 | 10 (29.4) | 9 (26.5) | 8 (23.5) | 7 (20.6) | 0.68 | 0.920 |
FDR, false discovery rate; RP, reference population. Values in bold are significant.