Table 3.

Confirmatory Factor Analyses for the EHFScB-9 and Consulting Behaviors Scale in a U.S. Sample (n=200)

	EHFScB-9	Consulting Behaviors
Standardized Parameter Estimates ± Standard Errors
I weigh myself every day	0.54±0.06
If my shortness of breath increases†	0.82±0.04	0.83±0.04
If my feet/legs become more swollen†	0.84±0.04	0.88±0.04
If I gain 5 pounds in one week†	0.83±0.03	0.81±0.04
I limit the amount of fluids I drink	0.58±0.05
If I experience increased fatigue†	0.77±0.04	0.80±0.03
I eat a low salt diet	0.56±0.06
I take my medications as prescribed	0.43±0.10
I exercise regularly	0.40±0.07
Goodness of Fit
χ2 (df)	103 (27)	9.54 (2)
p-value	<0.001	0.008
RMSEA‡	0.118	0.137
WRMR	0.997	0.397
CFI	0.942	0.992
NFI	0.923	0.990
TLI	0.922	0.976
AGFI	0.897	0.971

^† I contact my doctor or nurse

Abbreviations: AGFI = Adjusted Goodness-of-fit Index; CFI = Comparative Fit Index; df = degrees of freedom; EHFScB-9 = 9 Item European Heart Failure Self-care Behaviors Scale; NFI = Normed Fit Index; TLI = Tucker-Lewis Index; RMSEA = root mean square error of approximation; WRMR = weighted root mean square residuals.

^‡ 90% confidence interval 0.093–0.142, p<0.001, for the EHFScB-9, and 0.03–0.20, p0.097, for the consulting behaviors subscale (calculated by necessity from models not considering the ordered categorical nature of these data).

Thresholds for Acceptable Fit:¹⁵

RMSEA = 0.05–0.08

WRMR <1.0

CFI and TLI ≥ 0.95

AGFI ≥ 0.85

NFI ≥ 0.90