Table 5.

Psychometrics of the Patient Portal Sexual Health Instrument by group, American Men’s Internet Survey 2018 (N=1375).

Group		AMIS-PPSHIa
		Total
		Cronbach α	Mean (SD)	Test statisticb			P value
				F test (df)	t test (df)
All (N=1375)		.8430	28.94 (5.14)	N/Ac	N/A		N/A
US region				4.37 (3,1371)	N/A		.005
	Northeast (eg, New York and Vermont; n=221)	.8208	28.35 (4.88)
	Midwest (eg, Illinois and Ohio; n=314)	.8529	28.29 (5.46)
	South (eg, Florida and Alabama; n=505)	.8461	29.39 (5.13)
	West (eg, California and Oregon; n=335)	.8378	29.24 (4.92)
Age category				6.11 (3,1371)	N/A		<.001
	15-24 (n=318)	.8149	29.52 (4.62)
	25-29 (n=214)	.8095	29.44 (4.57)
	30-39 (n=291)	.8422	29.28 (5.03)
	≥40 (n=552)	.8608	28.22 (5.60)
STId test in 12 months before study				N/A	1.64 (1373)		.10
	Yes (n=1,128)	.8403	29.04 (5.10)
	No (n=247)	.8548	28.45 (5.28)
History of STI diagnosis				7.89 (2,1372)	N/A		<.001
	No history of STI diagnosis (n=1087)	.8385	29.21 (4.98)
	Living with HIV (n=118)	.8617	27.57 (5.89)
	Recent gonorrhea, chlamydia, or syphilis and no HIV (n=170)	.8437	28.13 (5.36)
Anticipated health care stigma				N/A	0.22 (1373)		.83
	No (n=1037)	.8431	28.95 (5.18)
	Yes (n=338)	.8433	28.88 (5.02)
Serious mental illness				N/A	1.76 (1373)		.08
	No (K6e<13; n=1113)	.8455	28.82 (5.20)
	Yes (K6≥13; n=262)	.8288	29.44 (4.82)

^aAmerican Men’s Internet Survey-Patient Portal Sexual Health Instrument.

^bTest statistic: for analysis of variance (ANOVA) the F-value _{(degrees of freedom groups, degrees of freedom residuals)} test statistic is reported; for t tests, the t value (degrees of freedom) test statistic is reported.

^cN/A: not applicable.

^dSTI: sexually transmitted infection.

^eK6 refers to the Kessler 6-item psychological distress scale.