. Author manuscript; available in PMC: 2023 Feb 27.

Published in final edited form as: J Am Assoc Nurse Pract. 2022 Mar 1;34(3):499–508. doi: 10.1097/JXX.0000000000000647

Table 5.

Age group differences (quartiles) in cognitive scores evaluated parametrically with ANOVA and non-parametrically with Kruskal Wallis

Cognitive Test	ANOVA F Statistic	P value	Effect size (η²)
Delayed	.65	.17	.039
Immediate	5.63^{^}	.13	-
Stroop	4.63	.006	.225
Digit Symbol	13.6^{^}	.004	-
Trails B	3.66	.019	.193
PROMIS Cognitive	.62	.60	.037

Footnote. Age quartiles: 1^st includes ages 22 to 27; 2^nd includes ages 28–33; 3^rd includes ages 34 to 49; and 4^th includes ages 50 to 62.

Abbreviations. PROMIS: Patient Reported Outcome Measures Information System

^{^}

= Significant Levene’s test found for ANOVA test, non-parametric Kruskal Wallis statistic used instead