Table 5.

Interaction between region and family monthly income in the number of sleep complaints in the population (N=1453).

Region	Family monthtly income	Mean±SEM (95% CI)
Center-west and North	Up to R$ 1244.00	1.6±0.2 (1.3–2.0)
	Between R$1245.00–6220.00	1.6±0.2 (1.3–2.0)
	More than R$ 6221,00	2.9±0.5 (1.9–4.0)⁎
Northeast	Up to R$1244.00	2.1±0.1 (1.9–2.4)#
	Between R$1245.00 and 6220.00	1.9±0.1 (1.9–2.4)
	More than R$6221.00	1.7±0.6 (0.4–2.9)
Southeast	Up to R$1244.00	2.0±0.1 (1.7–2.2)#
	Between R$1245.00 and 6220.00	2.0±0.1 (1.8–2.2)
	More than R$6221.00	1.7±0.3 (1.2–2.2)
South	up to R$1244.00	1.2±0.2 (0.7–1.6)
	Between R$1245.00 and 6220.00	1.8±0.2 (1.4–2.1)
	More than R$6221.00	1.7±0.5 (0.6–2.7)

^⁎p<0.05 compared to up lower income in the Center-west and North region;

^#p<0.05 compared to South.