Table 5. Maximal exercise capacity by maternal characteristics (univariate analysis).

		Wmax (Watt)
	N	Mean	SD	P
Maternal country of birth				<0.001
Sweden	201,160	307	50
Other Nordic countries	9,723	301	49
Europe	5,430	301	51
Asia	1,252	288	48
Unknown	435	294	52
Other	820	299	49
Maternal Age (years)				<0.001
–19	11,749	296	51
20–24	62,074	303	50
25–29	84,041	309	50
30–34	46,104	309	50
35–39	12,955	307	50
40–	1,897	304	49
Parity (number)				<0.001
1	92,902	307	50
2+	125,918	306	50