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. Author manuscript; available in PMC: 2010 Nov 1.
Published in final edited form as: Schizophr Res. 2009 Aug 25;115(1):50–57. doi: 10.1016/j.schres.2009.07.023

Table 3.

Mean Symptom Dimension Severity Ratings

Baseline Symptom Ratings
Antipsychotics
SSRIs*
Other Antidepressants (OD)
Symptom Dimension No Antipsychotic(n = 143) Mean (SD) Follow-up only (n = 31 Mean (SD)) Baseline & Follow-up (n = 13) Mean (SD) No SSRI (n = 116) Mean (SD) Follow-up only (n = 20) Mean (SD) Baseline & Follow-up (n = 40) Mean (SD) No OD (n = 151) Mean (SD) Follow-up only (n = 12) Mean (SD) Baseline & Follow up (n = 24) Mean (SD)
Positive a 11.91 (4.04) 12.81 (3.51) a 14.42 (5.00) 12.74 (4.34) 12.30 (4.65) 11.15 (2.90) 12.30 (4.28) 10.94 (3.65) 11.81 (2.94)
Negative 10.75 (7.11) 14.83 (6.14) 14.45 (8.26) 11.65 (7.57) 12.15 (6.45) 11.47 (6.84) 11.73 (7.26) 16.07 (6.68) 11.08 (7.51)
Disorganized ab 5.63 (3.54) a 7.90 (3.81) b 9.28 (3.96) 6.49 (3.74) 6.42 (4.13) 5.84 (3.84) 6.23 (3.72) 7.21 (4.64) 5.44 (3.78)
General 7.47 (4.00) 10.74 (4.13) 8.72 (4.75) 7.32 (4.16) 10.15 (4.25) 9.05 (4.23) 7.65 (4.26) 9.59 (3.48) 9.42 (4.06)
Follow-up Symptom Ratings (Corrected for covariates)
Antipsychotics
SSRIs
Other Antidepressants
Symptom Dimension No Antipsychotic(n = 143) Mean (SD) Follow-up only(n = 31) Mean (SD) Baseline & Follow-up (n = 13) Mean (SD) No SSRI (n = 116) Mean (SD) Follow-up only (n = 20) Mean (SD) Baseline & Follow-up (n = 40) Mean (SD) No OD (n = 151) Mean (SD) Follow-up only (n = 12) Mean (SD) Baseline & Follow-up (n = 24) Mean (SD)

Positive 7.20 (5.17) 6.33 4.69) 6.75 (5.51) 7.31 (5.36) 6.65 (5.05) 6.58 (4.75) 7.20 (5.20) a 9.12 (5.93) a 5.60 (3.32)
Negative 7.82 (7.67) 9.55 (7.38) 11.39 (7.38) 8.94 (7.75) 6.53 (6.64) 7.66 (7.08) 8.34 (7.46) 13.77 (9.94) 6.38 (6.05)
Disorganized 3.99 (3.71) 4.64 (2.95) 5.03 (4.20) 4.19 (3.79) 4.39 (3.31) 4.17 (3.27) 4.19 (3.71) 5.95 (4.09) 3.09 (2.57)
General 4.80 (4.50) 6.85 (4.32) 4.01 (4.96) 4.85 (4.42) 6.60 (3.71) 5.48 (5.31) 4.89 (4.44) 8.13 (6.18) 5.24 (3.99)
a,b

denotes pairs of means significantly different at p<.05

*

11 subjects on SSRIs at baseline but not follow-up are not included in this table