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Figure 3 | BMC Psychiatry

Figure 3

From: Air ions and mood outcomes: a review and meta-analysis

Figure 3

Dose–response Assessment Between Exposure Duration as Measured by Hours, within High-Density Air Ion Levels, and Each Study’s Score Mean Difference. *Terman, 1998 [8] only provided data for the composite SIGH-SAD scale and not by subscale; Terman and Terman [6] only provided data by subscale and not for the composite SIGH-SAD scale.

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