Table 2

Cronbach's α and test–retest reliability (ICC) of the QOLIBRI-OS for the total sample, separately for language versions and subgroups with low and high MMSE/TICS scores

	Total Sample	Dutch	English	Finnish	French	German	Italian	Low MMSE/TICS	High MMSE/TICS
N	792	99	97	156	148	153	139	103	171
Cronbach's α	0.86	0.79	0.91	0.88	0.82	0.89	0.81	0.88	0.87
N	375	27	54	49	129	116	–	81	119
ICC	0.81	0.81	0.69	0.86	0.75	0.86	NA	0.81	0.82

ICC, intraclass correlation; MMSE, Mini Mental State Examination; QOLIBRI-OS, Quality of Life after Brain Injury Overall Scale; TICS, Telephone Interview for Cognitive Status.