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. 2011 Nov 30;6(11):e28099. doi: 10.1371/journal.pone.0028099

Table 2. Observed means (SD) and caseness (%) on the CES-D for each trial condition at pre intervention, post intervention and six month follow up.

Measurement occasion
Pre intervention Post intervention 6 month follow-up
n Mean (SD) Caseness (%) n Mean (SD) Caseness (%) n Mean (SD) Caseness (%)
CES-D
Web only 38 35.0 (10.8) 36 (94.7) 27 24.4 (13.6) 19 (70.4) 23 18.0 (13.0) 10 (43.5)
Web with tracking 41 34.9 (10.1) 40 (97.6) 18 21.0 (12.4) 12 (66.7) 18 18.4 (10.4) 9 (50.0)
Tracking only 36 37.6 (10.7) 35 (97.2) 33 29.6 (13.2) 29 (87.9) 27 26.0 (13.7) 18 (66.6)
Control 35 38.6 (8.8) 35 (100.0) 27 35.1 (13.9) 25 (92.6) 22 34.2 (13.5) 20 (90.9)