Table 3.

Select^a Kappa Statistics and Intraclass Correlation Coefficients for Computer-assisted Self-Interview Items, by Age and Lifetime Number of Female Sex Partners, HPV in Men (HIM) Study, Brazil, Mexico, and the United States, 2005–2006

Interview Item	Age, years				Lifetime No. of Female Sex Partners
	<30		≥30		≤7		>7
	κ or ICC	95% CIb	κ or ICC	95% CIb	κ or ICC	95% CIb	κ or ICC	95% CIb
Interval variables
Lifetime no. of male anal sex partners	0.89	0.82, 0.93	0.50	0.34, 0.63	0.50	0.33, 0.64	0.62	0.45, 0.75
No. of different female sex partners in the past 3 monthsc	0.91	0.89, 0.92	0.60	0.54, 0.65	0.88	0.86, 0.90	0.93	0.92, 0.94
No. of sex partners other than a “steady” partner in the past 3 months	0.74	0.65, 0.81	0.12	0.00, 0.28	0.86	0.80, 0.90	0.29	0.15, 0.42
Ordinal variables
Frequency of condom use for anal sex in the past 3 monthsd	0.81	0.76, 0.85	0.88	0.85, 0.90	0.78	0.73, 0.82	0.85	0.82, 0.88
Nominal variables
Ever being diagnosed with Chlamydia	0.72	0.68, 0.76	0.80	0.77, 0.83	0.77	0.73, 0.80	0.80	0.76, 0.83
Ever being diagnosed with genital warts	0.81	0.78, 0.84	0.73	0.69, 0.77	0.70	0.66, 0.74	0.79	0.75, 0.82
Ever being diagnosed with herpes	—e		0.86	0.84, 0.88	0.77	0.73, 0.80	0.80	0.76, 0.83
Ever being diagnosed with hepatitis B	—e		0.76	0.72, 0.79	0.69	0.64, 0.73	0.78	0.74, 0.81
Ever being diagnosed with hepatitis C	0.79	0.76, 0.82	0.78	0.74, 0.81	0.72	0.68, 0.76	0.85	0.82, 0.87
Ever being diagnosed with human immunodeficiency virus	—e		0.72	0.68, 0.76	0.61	0.56, 0.66	0.76	0.72, 0.80
Ever being diagnosed with nongonococcal urethritis	—e		0.77	0.73, 0.80	0.79	0.76, 0.82	—e
Ever having a sex partner with a sexually transmitted disease	0.73	0.68, 0.78	0.74	0.70, 0.78	0.76	0.72, 0.79	0.77	0.73, 0.81
Ever having a sex partner with genital warts	0.82	0.79, 0.85	0.74	0.70, 0.78	0.81	0.78, 0.84	0.73	0.68, 0.77
Ever having a sex partner with an abnormal Papanicolaou test	0.78	0.74, 0.81	0.79	0.76, 0.82	0.77	0.73, 0.80	0.81	0.78, 0.84
Ever having vaginal, anal, or oral sex	0.81	0.78, 0.84	0.73	0.69, 0.77	0.81	0.78, 0.84	0.39	0.31, 0.47
Ever having oral sex	0.89	0.87, 0.91	0.82	0.79, 0.85	0.88	0.86, 0.90	0.76	0.72, 0.80
Ever paying a man for sex	0.71	0.58, 0.80	0.67	0.56, 0.75	0.54	0.39, 0.66	0.75	0.65, 0.83

Abbreviations: CI, confidence interval; ICC, intraclass correlation coefficient; HPV, human papillomavirus.

^aOmitted are reliability coefficients for 21 items for which all study site coefficients were greater than or equal to 0.81.

^bKappa and ICC coefficients were z-transformed for estimation of confidence intervals, as described by Rosner (48).

^cOne outlier (a value of 11,111,109,632 on both test and retest) was removed before calculation of ICCs.

^dWeighted κ, following the method of Cicchetti and Allison (45).

^eThe κ value was unstable because of a low number of cases or noncases; likewise, a stable κ value could not be calculated for any category for “ever being diagnosed with syphilis” and “frequency of condom use for paid anal/vaginal sex.”