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. 2020 Sep 24;8(9):e19579. doi: 10.2196/19579

Table 4.

Mixed-effects models for associations between activity and next-survey cognition.

Model Estimate 95% CI P value
Mobile Color-Word Interference Testa

Model 1: Cognitively stimulating activities


Cognitively stimulating activity (reference group: not doing activity)b 0.510 −0.878 to 0.547 .39

Model 2: Passive leisure activities


Passive leisure activity (reference group: not doing activity)b 0.449 −0.261 to 1.025 .38

Model 3: Instrumental activities of daily living


Instrumental activities of daily living (reference group: not doing activity)b −0.762 −0.230 to 1.083 .13
Mobile Verbal Learning Testc

Model 4: Cognitively stimulating activities


Cognitively stimulating activity (reference group: not doing activity)b −0.167 −0.634 to 1.666 .65

Model 5: Passive leisure activities


Passive leisure activity (reference group: not doing activity)b 0.385 −0.545 to 1.440 .24

Model 6: Instrumental activities of daily living


Instrumental activities of daily living (reference group: not doing activity)b −0.255 −1.757 to 0.236 .38

aMobile Color-Word Interference Test analyses controlled for study day, HIV status, age, and race or ethnicity.

bModeled as a within-person variable.

cMobile Verbal Learning Test analyses controlled for study day, HIV status, and education.