Mean (SD)

Window side

(n = 23)

Aisle side without false window

(n = 13)

Aisle side with false window

(n = 12)

P-value

Sleep efficiency (%), mean (SD)

87.1 (5.5)

86 (4.6)

84.4 (5.3)

0.33

Steps (/day), mean (SD)

5711 (3506)

5144 (2762)

5896 (1267)

0.78

Patient light exposure (lux), mean (SD)

58.6 (45.0)

30.9 (51.1)

32.0 (23.0)

0.10

Light exposure of hospital beds (lux), mean (SD)

15 (8.9)

6.3 (10.8)

2.3 (2.2)

<0.001