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. Author manuscript; available in PMC: 2021 Jan 1.
Published in final edited form as: J Alzheimers Dis. 2020;75(2):471–482. doi: 10.3233/JAD-191122

Table 5:

Comparison of cosinor parameters between interventions and isoforms for CSF Aβ40 and Aβ42

Dependent Variable Test Pairwise Comparison Estimate (95% CI) Estimated Difference (estimate, 95% CI) F (df) p-value
Aβ40
Amplitude (%) Intervention CSF control vs. CSF SD CSF control: 9.10 (4.76 – 13.45)
CSF SD: 9.03 (4.68 – 13.37)
+0.07 (−6.14 – 6.29) 0.001 (1,9) 0.98
Acrophase (hr) Intervention CSF control vs. CSF SD CSF control: 10.22 (5.05 – 15.39)
CSF SD: 5.83 (0.66 – 10.99)
+4.4 (−3.2 – 12.0) 1.8 (1,8) 0.22
Mesor (%) Intervention CSF control vs. CSF SD CSF control: 81.88 (71.13 – 92.64)
CSF SD: 80.96 (70.21 – 91.72)
+0.92 (−18.7 – 20.6) 0.01 (1,9) 0.92
Linear Rise (%/hr) Intervention CSF control vs. CSF SD CSF control: 0.96 (0.36 – 1.55)
CSF SD: 1.13 (0.53 – 1.72)
−0.17 (−1.23 – 0.89) 0.13 (1,9) 0.73
Aβ42
Amplitude (%) Intervention CSF control vs. CSF SD CSF control: 8.96 (4.67 – 13.25)
CSF SD: 10.75 (6.46 – 15.04)
−1.79 (−7.75 – 4.18) 0.5 (1,9) 0.52
Acrophase (hr) Intervention CSF control vs. CSF SD CSF control: 7.54 (1.61 – 13.47)
CSF SD: 5.94 (0.01 – 11.87)
+1.6 (−7.98 −11.2) 0.14 (1,10) 0.72
Mesor (%) Intervention CSF control vs. CSF SD CSF control: 80.17 (69.61 – 90.73)
CSF SD: 77.20 (66.63 – 87.76)
+2.97 (−15.3 – 21.2) 0.13 (1,10) 0.72
Linear Rise (%/hr) Intervention CSF control vs. CSF SD CSF control: 1.08 (0.50 – 1.67)
CSF SD: 1.35 (0.76 – 1.93)
−0.26 (−1.27 – 0.74) 0.34 (1,10) 0.58
Aβ Control
Amplitude (%) Isoform CSF Aβ40 vs. CSF Aβ42 CSF Aβ40: 9.08 (5.75 – 12.41)
CSF Aβ42: 8.90 (5.57 – 12.22)
+0.19 (−2.35 – 2.72) 0.03 (1,7) 0.87
Acrophase (hr) Isoform CSF Aβ40 vs. CSF Aβ42 CSF Aβ40: 10.13 (5.72 – 14.53)
CSF Aβ42: 7.81 (3.41 – 12.22)
+2.3 (−3.01 – 7.6) 1.1 (1,7) 0.34
Mesor (%) Isoform CSF Aβ40 vs. CSF Aβ42 CSF Aβ40: 85.04 (73.25 – 96.84)
CSF Aβ42: 82.09 (70.30 – 93.89)
+2.95 (−0.07 – 5.97) 5.4 (1,7) 0.05
Linear Rise (%/hr) Isoform CSF Aβ40 vs. CSF Aβ42 CSF Aβ40: 0.80 (0.151.45)
CSF Aβ42: 0.98 (0.331.63)
0.19 (−0.36 - −0.01) 6.4 (1,7) 0.04
Aβ Sleep-Deprived
Amplitude (%) Isoform CSF Aβ40 vs. CSF Aβ42 CSF Aβ40: 8.89 (−4.61 – 1.06)
CSF Aβ42: 10.66 (4.98 – 16.34)
−1.78 (−4.6 – 1.1) 2.2 (1,7) 0.18
Acrophase (hr) Isoform CSF Aβ40 vs. CSF Aβ42 CSF Aβ40: 5.94 (−1.37 – 13.24)
CSF Aβ42: 5.88 (−1.43 – 13.18)
+0.063 (−.87 – 0.996) 0.03 (1,7) 0.88
Mesor (%) Isoform CSF Aβ40 vs. CSF Aβ42 CSF Aβ40: 80.95 (68.4093.50)
CSF Aβ42: 76.47 (63.9289.02)
+4.48 (2.7 – 6.3) 35.5 (1,7) 0.001
Linear Rise (%/hr) Isoform CSF Aβ40 vs. CSF Aβ42 CSF Aβ40: 1.13 (0.431.82)
CSF Aβ42: 1.38 (0.692.08)
0.26 (−0.35 – −0.16) 40.9 (1,7) <0.001

Aβ: amyloid-beta; CI: confidence intervals; df: degrees of freedom; CSF: cerebrospinal fluid; SD: sleep deprivation; hr: hour