Inertia, innovation, and cross-lagged effects in negative affect and rumination: daily diary study among people living with HIV

Figures & data

Table 1. Univariate higher-order moment descriptive statistics.

Variable	Mean	SD	Skewness	Kurtosis	Range
NA	1.70	0.88	1.05	0.24	1–5
RU	2.48	0.91	.10	−0.51	1–5

Note: NA: negative affect; RU: rumination; SD: standard deviation.

Table 2. Fixed and radom effects obtained in dynamic structural equation modeling of relationship between negative affect and rumination.

Variable	Fixed effects (means)			Random effects (variances)
	Estimate	SD	95% CI	Estimate	SD	95% CI
μNA	1.59	0.06	[1.41, 1.63]	0.14	0.04	[0.09, 0.23]
μRU	2.59	0.09	[2.43, 2.77]	0.37	0.09	[0.22, 0.56]
φNN	0.07	0.08	[−0.09, 0.22]	0.26	0.06	[0.16, 0.41]
φRR	0.25	0.09	[0.07, 0.44]	0.31	0.08	[0.18, 0.49]
φNR	−0.01	0.10	[−0.18, 0.21]	0.32	0.10	[0.18, 0.55]
φRN	0.12	0.08	[−0.04, 0.28]	0.21	0.06	[0.11, 0.35]
log (πNA)	−2.03	0.19	[−2.41, −1.65]	4.37	0.68	[3.20, 5.86]
log (πRU)	−1.10	0.11	[−1.33, −0.88]	0.46	0.18	[0.23, 0.88]
log (ψ)	−5.34	0.34	[−6.02, −4.67]	0.16	0.16	[0.20, 0.63]

Note: μ_NA and μ_RU: random means for daily negative affect and rumination; φ_NN and φ_RR: random autoregressive regression coefficients for daily negative affect and rumination; φ_NR and φ_RN: cross-lagged regression coefficients between daily negative affect and rumination; log(π_NA) and log(π_RU): random log of the variance of the unique parts of the innovations in negative affect and rumination; log(ψ): random log of covariance between the innovations; SD: standard deviation; 95% CI: 95% credible intervals.

Table 3. Correlations between standardized values of random effects.

Variable	μNA	μRU	φNN	φRR	φNR	φRN	log (πNA)	log (πRU)
μNA	1
μRU	−.33	1
φNN	−.04	−.20	1
φRR	.19	.32	−.77	1
φNR	−.13	−.39	.87	−.86	1
φRN	−.05	−.02	−.80	.67	−.63	1
log (πNA)	.92	−.37	.12	−.01	.08	−.19	1
log (πRU)	.23	.28	.07	−.10	.07	−.21	.30	1
log (ψ)	.64	−.23	.10	−.01	.09	−.11	.67	.24

Note: μ_NA and μ_RU: random means for daily negative affect and rumination; φ_NN and φ_RR: random autoregressive regression coefficients for daily negative affect and rumination; φ_NR and φ_RN: cross-lagged regression coefficients between daily negative affect and rumination; log(π_NA) and log(π_RU): random log of the variance of the unique parts of the innovations in negative affect and rumination; log(ψ): random log of covariance between the innovations.

Only for bolded values 95% credible interval does not contain zero.

Data availability statement

All the data are available upon the request from the corresponding author.