Table 3. Sociodemographic and lifestyle factors summarized for sleep symptoms.

	Feeling sleepy, yes %	P	DFA, yes %	P	DSA, yes %	P	EMA, yes %	P
Age a	61.27 ± 13.9 (2.2)	.010	61.0 ± 13.2 (1.9)	.029	61.3 ± 13.1 (1.6)	.066	60.3 ± 13.8 (3.5)	<.001
Sex		<.001		.008		.014		.096
Male	44.9 (140/312)		32.4 (102/315)		36.6 (115/314)		42.0 (132/314)
Female	57.1 (388/679)		41.1 (281/683)		44.9 (306/681)		47.7 (322/675)
Education		.661		.579		.927
<High school	54.8 (182/332)		39.9 (132/331)		43.1 (143/332)		44.6 (148/332)
≥High school	53.3 (321/602)		38.0 (232/610)		42.8 (260/608)		46.6 (281/603)
Marital status		.013		.822		.122		.870
Not married	56.5 (362/641)		39.1 (252/645)		44.8 (288/643)		46.6 (299/641)
Married	47.9 (148/309)		38.3 (118/308)		39.5 (122/209)		46.1 (141/306)
Income		.228		.081		.447		.209
<$10,000	57.1 (204/357)		42.3 (153/362)		45.7 (165/361)		49.2 (176/358)
≥$10,000	53.0 (259/489)		36.4 (179/492)		43.1 (212/492)		44.8 (220/491)
BMI	34.2+8.5 (0.9)	.105	34.3+9.0 (-0.8)	.177	34.2+8.7 (0.7)	.247	34.9 + 9.3 (-2.0)	<.001
Smoking b		.049		.145		<.001		.120
No	52.2 (319/611)		36.7 (226/616)		39.2 (242/617)		44.8 (274/611)
Yes	59.4 (158/266)		41.9 (111/265)		54.0 (142/263)		50.6 (133/263)
Drinking c		.347		.942		.900		.741
No	56.4 (346/614)		38.3 (237/619)		43.5 (269/619)		46.7 (287/614)
Yes	52.4 (97/185)		38.6 (71/184)		42.9 (79/184)		45.4 (83/183)

a. For continuous variables, the mean ± SD (mean difference) is presented. The mean difference is the mean of “no”- the mean of “yes”.

b. “Yes” includes history of smoking and current smoking vs. never smoked.

c. “Yes” includes history of drinking and current drinking vs. never drank.

DFA, Difficulty Falling Asleep; DSA, Difficulty Staying Asleep; EMA, Early Morning Awakenings.