TABLE 7.

Item response analysis of the Satisfaction with Life Scale (N = 500).

	Coef.	SE	Z	P	95% CI
In most ways my life is close to my ideal
Discrimination	4.50	0.38	11.82	0.00	3.75	5.24
Difficulty
≥2	–1.25	0.08	–15.38	0.00	–1.41	–1.09
≥3	–0.73	0.07	–11.21	0.00	–0.86	–0.60
≥4	–0.35	0.06	–6.00	0.00	–0.47	–0.24
≥5	–0.06	0.06	–1.07	0.29	–0.17	0.05
≥6	0.65	0.06	10.20	0.00	0.53	0.78
7	1.57	0.10	16.37	0.00	1.38	1.76
The conditions of my life are excellent
Discrimination	3.25	0.24	13.66	0.00	2.78	3.72
Difficulty
≥2	–1.53	0.10	–15.38	0.00	–1.72	–1.33
≥3	–1.01	0.08	–13.04	0.00	–1.16	–0.86
≥4	–0.53	0.07	–8.08	0.00	–0.65	–0.40
≥5	–0.17	0.06	–2.85	0.00	–0.29	–0.05
≥6	0.49	0.07	7.46	0.00	0.36	0.61
7	1.58	0.10	15.30	0.00	1.38	1.78
I am satisfied with my life
Discrimination	3.93	0.31	12.70	0.00	3.33	4.54
Difficulty
≥2	–1.32	0.09	–15.44	0.00	–1.49	–1.15
≥3	–0.92	0.07	–12.77	0.00	–1.06	–0.78
≥4	–0.52	0.06	–8.30	0.00	–0.64	–0.40
≥5	–0.27	0.06	–4.48	0.00	–0.38	–0.15
≥6	0.31	0.06	5.14	0.00	0.19	0.43
7	1.28	0.08	15.07	0.00	1.11	1.45
So far I have gotten the important things I want in life
Discrimination	2.30	0.17	13.58	0.00	1.97	2.63
Difficulty
≥2	–1.67	0.12	–14.00	0.00	–1.91	–1.44
≥3	–1.12	0.09	–12.31	0.00	–1.30	–0.94
≥4	–0.56	0.07	–7.61	0.00	–0.70	–0.41
≥5	–0.23	0.07	–3.37	0.00	–0.36	–0.10
≥6	0.37	0.07	5.25	0.00	0.23	0.51
7	1.45	0.11	13.58	0.00	1.24	1.66
If I could live my life over, I would change almost nothing
Discrimination	1.74	0.14	12.79	0.00	1.47	2.01
Difficulty
≥2	–1.42	0.12	–11.79	0.00	–1.65	–1.18
≥3	–0.61	0.09	–7.17	0.00	–0.78	–0.44
≥4	–0.04	0.08	–0.54	0.59	–0.19	0.11
≥5	0.30	0.08	3.89	0.00	0.15	0.45
≥6	0.96	0.10	9.94	0.00	0.77	1.15
7	1.76	0.14	12.50	0.00	1.48	2.04