Table 1.

Demographic comparisons between BDD, SPA and control groups at baseline

	BDD group	Small penis anxiety group	Control group	Comparison
n	26	31	33
Mean age, (SD)	42.04 (10.01)	31.77 (10.61)	32.42 (13.06)	F (2, 88) = 7.02, P = 0.001
				BDD × SPA t (55) = −3.73, P < 0.001, d = 0.98
				BDD × Control t (57) = −3.10, P = 0.003, d = 0.91
				SPA × Control t (62) = 0.218, P = 0.828, d = 0.01
Mean age men started to think their penis was small, (SD)	16.46 (9.18)	15.39 (3.64)	n/a	t (55) = −0.565, P = 0.574
Mean age penis size became a significant problem, (SD)	19.00 (9.18)	18.08 (4.30)	n/a	t (55) = −0.452, P = 0.653
Mean age sought help for size related concern, (SD)	30.35 (12.12)	23.61 (11.83)	n/a	t (55) = −2.06, P = 0.046