Table 2.

Fractional distribution (%, upper/lower 95% CI) of birth month by gender and category

				Q1			Q2			Q3			Q4
Category	Gender	n	Lower	%	Upper	Lower	%	Upper	Lower	%	Upper	Lower	%	Upper
	Female	16 761	26.6	27.4	28.2	24.7	25.4	26.2	23.6	24.3	25.1	22.2	22.9	23.6
	Male	27 372	27.2	27.7	28.4	25.3	25.9	26.5	23.8	24.4	25	21.4	22	22.5
Summer	Female	13 782	26.9	27.8	28.7	24.5	25.4	26.2	23.5	24.4	25.3	21.7	22.5	23.3
Winter	Female	2979	23.7	25.5	27.3	23.9	25.8	27.6	22.4	24.1	25.9	22.9	24.6	26.4
Summer	Male	22 294	26.9	27.6	28.3	25.3	25.9	26.6	23.7	24.3	25	21.6	22.2	22.9
Winter	Male	5078	27.1	28.5	30	24.5	25.9	27.3	23.5	24.9	26.4	19.5	20.7	22
Ball	Female	4737	26.6	28.1	29.6	24.6	26.1	27.5	22.2	23.5	25	21	22.3	23.7
Non-ball	Female	12 024	26.2	27.1	28	24.3	25.2	26.1	23.7	24.6	25.5	22.2	23.1	24
Ball	Male	6720	27.1	28.3	29.6	24.3	25.5	26.7	23.9	25.1	26.4	19.9	21	22.1
Non-ball	Male	20 652	26.8	27.6	28.3	25.3	26	26.7	23.5	24.2	24.9	21.6	22.3	22.9
Individual	Female	12 527	26.3	27.2	28.1	24.3	25.1	26.1	23.8	24.7	25.6	22.2	23	23.8
Team	Female	4234	26.3	27.9	29.5	24.7	26.2	27.8	21.9	23.3	24.8	21.1	22.6	24
Individual	Male	21 437	26.8	27.5	28.2	25.3	26	26.7	23.5	24.2	24.8	21.7	22.3	23
Team	Male	5935	27.3	28.7	30	24.2	25.5	26.8	24	25.2	26.6	19.5	20.6	21.8

All distributions (Q1%, Q2%, Q3% and Q4%) were significantly different from expected (all p<0.001) except for Female Winter (p=0.3414).