Link Between Daily Sleep and Self-care Behaviors and

role of daily self-regulation failures with both the within- person effect and between-person effect simultaneously see Fig. 1
for full model results. Analyses revealed a within-person effect of persons with T1D’s daily sleep quality on their daily self-care behaviors, indicating that on days when persons with TD reported having better daily sleep quality the prior evening than their average, they reported higher daily self-care behaviors on that day (B= .02, SE = .01, p = .01, confidence interval CI .04]). Furthermore, a significant within-person effect of persons with T1D’s daily sleep quality on daily self-regulation failures was found, such that on days when persons with TD reported having better daily sleep quality the prior evening than their average, they reported lower daily self-regulation failures on that day
(B= −.03, SE = .01, p = .008, CI [−.06; −.01]). Also, analyses revealed a significant within-person effect of persons with T1D’s daily self-regulation failures on daily self-care behaviors, such that on days when persons with TD reported higher daily self-regulation failures than their average, they reported lower daily self-care behaviors (B = −.29, SE = .04, p = < .001, CI [−.38; −.20]).
In addition, the indirect within-person effect was sig- nificant, such that daily self-regulation failures partially mediated the association between daily sleep quality the prior evening and daily self-care behaviors on that day.
That is, on days when persons with T1D reported better daily sleep quality than their average, they reported lower daily self-regulation failures, leading to an increase in daily self-care behaviors (B = .01, SE = .004, p = .02, CI [.002; .02]; see Fig. 1
for within-person effect results).
Analyses of between person effects were identical to the within-person effects noted above (a) persons with TD who reported better sleep quality than the average persons with TD reported better self-care behaviors
(B= .16, SE = .05, p = .001, CI [.07; .26]), (b) persons
Fig. 1. Multilevel mediation model to examine the relationship between sleep quality and self-care behaviors and self-regulation failures as a mediator. Within-person effect and between-person effect were examined simultaneously. Figure reports unstandardized coefficients with standard errors in parentheses and the 95% confidence intervals (CI) in brackets. *p < .05,
**
p < .01,
***
p < .001.
ann. behav. med. (2020) 54:249–257 253

with TD who reported better sleep quality than the average persons with TD reported lower self-regulation failures (B = −.21, SE = .08, p = .006, CI [−.36; −.06]), c) persons with TD who reported higher self-regula- tion failures on average reported lower self-care behaviors on average (B = −.55, SE = .06, p < .001, CI [−.66;
−.43]), and (d) the indirect between-person effect was significant such that persons with T1D with better sleep quality on average reported lower self-regulation fail- ures on average, leading to better self-care behaviors on average (B = .12, SE =.04, p = .01, CI [.03; .20]; see Fig.
1
for between-person effect results.)

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