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Table 1 Stratification by Age and Depression Severity

From: Bright green light treatment of depression for older adults [ISRCTN69400161]

Age-Depression Severity Group

Bright

Dim

Total

Age < 68, GDS < 16

0

0

0

Age < 68, GDS ≥ 16

10

10

20

Age ≥ 68, GDS < 16

2

2

4

Age ≥ 68, GDS ≥ 16

5

4

9

Total

17

16

33