Table 6b.

Comparisons of age, sex and work condition between poor and good sleepers.

	Age (n = 1186)	Sex (female) (n = 1186)	Work condition
			Remote working (n = 1186)	Working in presence (n = 1186)	Not working (n = 1186)	Schedule-free (n = 1186)
PSQI<5	39.69 ± 15.15	383 (56.7%)	431 (63.8%)	108 (16.0%)	104 (15.4%)	33 (4.9%)
PSQI>5	39.49 ± 14.84	352 (69%)	280 (54.9%)	81 (15.9%)	118 (23.1%)	31 (6.1%)
(df) p-value	0.829	(1) <0.001	(1) 0.002	(1) 1	(1) <0.001	(1) 0.439

PSQI: Pittsburgh Sleep Quality Index.

Chi-square's test was used to compare the distribution of sex and working condition, while for the other variables Mann-Whitney test was used for comparisons between poor and good sleepers.