Table 4.
Explained variance in depression core symptoms and time in bed at different time lags for all patients with significant Granger causality test results.
| Granger causality | laga 1 | lag 2 | lag 3 | lag 4 | lag 5 | lag 6 | lag 8 | lag 9 | lag 10 | ||||||||||
| TIBb Granger causes depression |
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Patient 3 | 0.00 | 0.07 | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 | |||||||||
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Patient 6 | 0.00 | 0.04 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | |||||||||
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Patient 20 | 0.06 | 0.12 | 0.13 | 0.13 | 0.13 | 0.13 | 0.13 | 0.13 | 0.13 | |||||||||
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Mean | 0.02 | 0.08 | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 | |||||||||
| Depression Granger causes TIB |
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Patient 10 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | |||||||||
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Patient 11 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | |||||||||
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Patient 14 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | |||||||||
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Patient 19 | 0.00 | 0.01 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | |||||||||
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Mean | 0.02 | 0.02 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | |||||||||
| TSTc Granger causes depression |
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Patient 6 | 0.00 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | |||||||||
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Patient 7 | 0.00 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | |||||||||
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Patient 14 | 0.01 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | |||||||||
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Patient 19 | 0.01 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | |||||||||
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Patient 20 | 0.02 | 0.08 | 0.08 | 0.08 | 0.08 | 0.08 | 0.08 | 0.08 | 0.08 | |||||||||
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Patient 21 | 0.09 | 0.13 | 0.14 | 0.14 | 0.15 | 0.16 | 0.16 | 0.16 | 0.16 | |||||||||
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Mean | 0.02 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | |||||||||
| Depression Granger causes TST |
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Patient 2 | 0.00 | 0.02 | 0.04 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | |||||||||
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Patient 11 | 0.00 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | |||||||||
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Patient 22 | 0.00 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | |||||||||
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Mean | 0.00 | 0.02 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | |||||||||
aLag numbers correspond to days.
bTIB: time in bed.
cTST: total sleep time.