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. 2018 Dec 12;76(2):190–198. doi: 10.1001/jamapsychiatry.2018.3546

Table 2. Lagged Associations Between Mood (Top) and Energy (Bottom) on Motor Activity.

Category	Estimate	P Value
Outcome: Motor Activity_t^a
Mood_t-1^b	–0.099	_.23
Mood disorder subtype
Bipolar I	−0.397	_.28
Bipolar II	0.383	_.28
Major depression	−0.017	_.95
Interactions
Mood _t-1 × bipolar I	−0.382	_.07
Mood _t-1 × bipolar II	−0.019	_.91
Mood _t-1 × major depression	−0.151	_.33
Model covariates
Age	−0.041	<.001^c
Sex (F vs M)	0.292	_.29
Body mass index	−0.063	<.001^c
Activity_t-1	0.416	<.001^c
Sleep duration, h	−0.131	_.06
Weekday	−0.126	_.25
Outcome: Motor Activity_t^a
Energy_t-1^d	0.176	_.03^c
Mood disorder subtype
Bipolar I	−0.295	_.43
Bipolar II	0.328	_.35
Major depression	0.021	_.94
Interactions
Energy _t-1 × bipolar I	0.360	_.056
Energy _t-1 × bipolar II	−0.148	_.49
Energy _t-1 × major depression	0.021	_.87
Model covariates
Age	−0.041	<.001^c
Sex (F vs M)	0.366	_.19
Body mass index	−0.066	<.001^c
Activity_t-1	0.413	<.001^c
Sleep duration, h	−0.154	_.04^c
Weekday	−0.219	_.04^c

Abbreviations: F, female; M, male; t, period; t-1, same domain in previous period (Granger model).

^{^a}

Mean counts per minute for each period.

^{^b}

Analog mood scale rated by participant 4 times per day for 2 weeks.

^{^c}

Denotes statistically significant finding.

^{^d}

Analog energy scale rated by participant 4 times per day for 2 weeks.