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Table 3 Improvement of symptoms as measured by the SIGH-SAD, HAMA, and BDI

From: Transcranial bright light treatment via the ear canals in seasonal affective disorder: a randomized, double-blind dose-response study

Improvement Group 1 (n = 28) Group 2 (n = 31) Group 3 (n = 30)
  % 95% CI p-value % 95% CI p-value % 95% CI p-value
SIGH-SAD 47.4 34.9-60.0 0.0001 45.9 36.0-55.7 0.0001 43.7 32.7-54.8 0.0001
HAMA 49.9 34.7-65.2 0.0137 49.5 38.5-60.5 0.0056 46.5 35.9-57.2 0.0001
BDI 67.3 53.0-81.6 0.0158 67.4 55.5-79.4 0.1282 63.2 49.9-76.6 0.0013