Table 6.

A summary of covariates and FTND scores in our sample: by definition, all control subjects scored 0 on the FTND (34)

		Cases		Controls
		USA	Australia	USA	Australia
Males	N	351	114	251	17
	Age
	range	25–44	30–82	25–44	34–82
	μ ± σa	36.8 ± 5.3	39.4 ± 9.8	35.3 ± 5.5	55.1 ± 15.4
	FTND
	range	4–10	4–10	–	–
	μ ± σ	6.4 ± 1.7	6.1 ± 1.6	–	–
Females	N	446	139	562	49
	Age
	range	25–45	27–79	25–44	27–78
	μ ± σ	37.1 ± 5.2	40.4 ± 10.3	35.9 ± 5.5	46.4 ± 14.0
	FTND
	range	4–10	4–10	–	–
	μ ± σ	6.4 ± 1.8	6.0 ± 1.6	–	–
Combined	N	797	253	813	66
		Total	1050		879

^aMean ± SD.