Table 2.

Results for confirmatory factor analysis of the FKSI-19 instrument. Item reliabilities ≥ 0.40 are given in bold

Factor	Indicator	Standardized factor loadings			Standardized estimate	Item reliability (R2)
		Estimate	95% CI	P value
DRS-P	GP1a	1.026	0.978–1.073	< 0.001	0.843	0.710
	GP4a	0.498	0.455–0.541	< 0.001	0.527	0.278
	C2a	0.316	0.278–0.354	< 0.001	0.390	0.152
	HI7a	0.999	0.957–1.042	< 0.001	0.883	0.780
	B1a	0.678	0.630–0.727	< 0.001	0.614	0.377
	BRM3a	0.118	0.099–0.136	< 0.001	0.306	0.093
	BP1a	0.425	0.382–0.467	< 0.001	0.463	0.214
	L2a	0.319	0.274–0.364	< 0.001	0.336	0.113
	HI12a	1.001	0.958–1.045	< 0.001	0.875	0.766
	RCC2a	0.048	0.027–0.070	< 0.001	0.110	0.012
	C6	0.357	0.308–0.405	< 0.001	0.350	0.123
	GF5	0.378	0.324–0.433	< 0.001	0.331	0.110
DRS-E	GE6a	1.226	1.185–1.267	< 0.001	1.000	1.000
TSE	GP2a	0.409	0.371–0.446	< 0.001	0.592	0.351
	C5a	0.365	0.321–0.409	< 0.001	0.455	0.207
	GP5a	0.467	0.420–0.515	< 0.001	0.524	0.275
FWB	GF1	0.747	0.699–0.795	< 0.001	0.673	0.453
	GF3	0.958	0.917–0.998	< 0.001	0.909	0.827
	GF7	1.023	0.978–1.067	< 0.001	0.888	0.789

CI confidence interval, DRS-E disease-related symptoms-emotional, DRS-P disease-related symptoms-physical, FWB function/well-being, TSE treatment side effects

^aReverse-scored