Demographic characteristics associated with circadian rest-activity rhythm patterns: a cross-sectional study

Table 2 Coefficients of sex, age and race/ethnicity for rest-activity rhythm metrics from multivariable analysis

RAR metrics	Coefficients	Women vs. Men^a	Age^b	Hispanics vs NH-whites^c	NH-blacks vs NH-whites^c	NH-Asians vs NH-whites^c
Amplitude	β (95%CI)	0.82 (0.45, 1.19)	−0.08 (− 0.09, − 0.07)	1.30 (0.84, 1.76)	−0.84 (− 1.27, − 0.41)	0.14 (− 0.43, 0.70)
Amplitude	Adjusted P	< 0.001	< 0.001	< 0.001	< 0.001	0.628
Mesor	β (95%CI)	0.39 (0.20, 0.57)	−0.04 (− 0.05, − 0.04)	0.78 (0.54, 1.02)	0.01 (− 0.20, 0.22)	0.30 (− 0.03, 0.62)
Mesor	Adjusted P	< 0.001	< 0.001	< 0.001	0.940	0.070
Acrophase	β (95%CI)	0.10 (−0.004, 0.20)	−0.03 (− 0.04, − 0.03)	0.003 (− 0.15, 0.16)	0.14 (− 0.05, 0.34)	0.32 (0.14, 0.50)
Acrophase	Adjusted P	0.055	< 0.001	0.972	0.140	0.001
Pseudo-F statistic	β (95%CI)	71.57 (59.59, 83.56)	1.56 (1.14, 1.97)	−5.85 (−28.50, 16.81)	8.62 (−3.95, 21.18)	39.79 (17.60, 61.98)
Pseudo-F statistic	Adjusted P	< 0.001	< 0.001	0.603	0.172	0.001
IS	β (95%CI)	0.02 (0.015, 0.025)	0.001 (0.0003, 0.001)	0.015 (0.009, 0.022)	−0.025 (−0.031, −0.018)	− 0.001 (− 0.008, 0.006)
IS	Adjusted P	< 0.001	< 0.001	< 0.001	< 0.001	0.755
IV	β (95%CI)	−0.027 (− 0.031, − 0.023)	−0.0004 (− 0.001, − 0.0003)	−0.020 (− 0.027, − 0.014)	0.005 (− 0.001, 0.011)	−0.004 (− 0.012, 0.003)
IV	Adjusted P	< 0.001	< 0.001	< 0.001	0.088	0.249

IS Interdaily stability, IV Intradaily variability, NH Non-Hispanic, RAR Rest-activity rhythm
^aAdjusted for age, race, education, marital status, employment status, poverty income ratio
^b Adjusted for sex, race, education, marital status, employment status, poverty income ratio
^cAdjusted for sex, age, education, marital status, employment status, poverty income ratio

ISSN: 1479-5868