Table 3.

Fraternal and sororal birth order for all four groups

Group	n	FBO		n	SBO
		M	SD		M	SD
Gender dysphoric boys	67	0.53	.47	35	0.44	.49
Control boys	456	0.48	.48	475	0.47	.48
Gender dysphoric girls	36	0.56	.48	44	0.38	.46
Control girls	494	0.49	.48	492	0.47	.47

FBO fraternal birth order, SBO sororal birth order