Journal of Patient-Reported Outcomes

Table 3 One sample Z-test

From: Health-Related Quality of Life in people with Multiple Sclerosis: How does this Population Compare to Population-based Norms in Different Health Domains?

Population mean 50 ± 10	Subscales								Composite scores
Population mean 50 ± 10	PF	RP	BP	GH	VT	SF	RE	MH	PCS	MCS
Sample mean	43.12	40.95	45.55	42.84	42.04	39.83	41.49	44.27	43.45	42.16
N	120	120	120	120	120	120	120	120	120	120
Z value, p < .01	− 7.54	− 9.91	− 4.87	− 7.84	− 8.72	− 11.14	− 9.32	− 6.28	− 7.18	− 8.58
Cohen’s d	.688	.905	.445	.716	.7961	1.017	.851	.573	.655	.784

Calculated based on norm-based scores using Optum SF-36V2v2 software [32]
PF physical function, RP role physical, BP bodily pain, GH general health, VT vitality, SF social function, RE role emotional, MH mental health, PCS physical component summary, MCS mental health component summary

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