Table 6. Variance components of person (P), occasion (O) and P × O interaction together with absolute and relative G-coefficients and state component index (SCI) for each individual item of the RPQ (n = 145 × 3).

Items	Variance components				G	G
	P	O	P ×  O	P ×  I	Relative	Absolute	SCI
4. Noise sensitivity	1.24	0.00	0.10	–	0.93	0.92	0.07
9. Frustrated or impatient	0.85	0.00	0.14	–	0.86	0.86	0.14
3. Nausea and /or vomiting	0.78	0.02	0.14	–	0.85	0.83	0.15
5. Sleep disturbance	0.72	0.02	0.14	–	0.84	0.82	0.16
8. Depressed or tearful	0.80	0.04	0.17	–	0.82	0.79	0.18
10. Forgetful, poor memory	0.70	0.03	0.18	–	0.79	0.77	0.20
13. Blurred vision	0.74	0.02	0.20	–	0.78	0.77	0.21
2. Feelings of dizziness	0.86	0.03	0.26	–	0.77	0.75	0.23
15. Double vision	0.71	0.03	0.20	–	0.78	0.75	0.22
14. Light sensitivity	0.66	0.05	0.18	–	0.79	0.74	0.21
12. Taking longer to think	0.54	0.03	0.21	–	0.72	0.69	0.28
1. Headaches	0.58	0.06	0.21	–	0.74	0.69	0.27
7. Irritable, easily angered	0.46	0.05	0.19	–	0.71	0.66	0.29
16. Restlessness	0.41	0.03	0.22	–	0.65	0.62	0.35
6. Fatigue, tiring more easily	0.42	0.01	0.26	–	0.62	0.61	0.38
11. Poor concentration	0.45	0.08	0.22	–	0.68	0.60	0.33
Subscales/factors
Somatic	0.45	0.00	0.01	0.02	0.93	0.92	0.02
Cognitive	0.48	0.00	0.00	0.03	0.84	0.81	0.00
Affective	0.49	0.00	0.01	0.01	0.90	0.89	0.02
Cognitive +Affective	0.48	0.00	0.01	0.01	0.93	0.92	0.02
RPQ-13	0.44	0.00	0.01	0.00	0.96	0.96	0.02
RPQ-3	0.66	0.00	0.02	0.03	0.86	0.85	0.03

Notes.

^aP ×  I variance components are not available for single item/level analysis. Absolute G-coefficient is presented in descending order for individual items.