Table 3. Cross-sectional comparison of EQ index scores with adjusted population norms.

	N	Expected meana	Observed meanb (99% CI)	Differencec	P valued
Pre-stroke	464	0.94	0.87 (0.84; 0.89)	0.07	<0.001
3 month post-stroke	306	0.94	0.61 (0.55; 0.67)	0.33	<0.001
12 month post-stroke	258	0.94	0.76 (0.71; 0.81)	0.18	<0.001

99% CI, 99% confidence interval

^a Expected mean: the age, gender, and ethnicity adjusted mean EQ index scores obtained from published population norm

^b Observed mean: the mean EQ index scores of stroke patients in our study

^c Difference: Expected mean minus Observed mean

^d p value of mean difference using one sample t-test