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Table 3 Effects of the PSIW and PSOC interventions on work ability and clinical and work-related parameters at baseline and follow-up

From: Effectiveness of psychotherapeutic consultation in the workplace: a controlled observational trial

Variable Group Baseline
mean (SD)
Follow-up
mean (SD)
Group effect,
F-value, p, η2
Time effect
F-value, p, η2
Group*Time effect,
F-value, p, η2
WAI PSIW 29.5 (8.02) 30.8 (8.32) (1:317) = 1.832, 0.177, 0.006 (1:317) = 10.149, 0.002, 0.031 (1:317) = 1.602, 0.206, 0.005
PSOC 25.3 (9.07) 26.8 (9.21)
all 27.2 (8.85) 28.6 (9.02)
  aΔ PSIW vs. PSOC p = 0.000     
SF-12 MCS PSIW 33.3 (11.13) 37.5 (11.77) (1:315) = 0.155, 0.694, 0.000 (1:315) = 9.093, 0.003, 0.028 (1:315) = 6.950, 0.009, 0.022
PSOC 29.8 (10.24) 32.7 (11.07)
all 31.4 (10.78) 34.9 (11.62)
  aΔ PSIW vs. PSOC p = 0.002     
SF-12 PCS PSIW 45.8 (11.13) 45.4 (10.96) (1:315) = 0.321, 0.572, 0.001 (1:315) = 0.858, 0.355, 0.003 (1:315) = 0.679,
0.411, 0.002
PSOC 43.8 (11.31) 44.5 (10.90)
all 44.7 (11.36) 45.0 (10.92)
  aΔ PSIW vs. PSOC p = 0.146     
PHQ-9 PSIW 11.2 (5.71) 9.6 (6.05) (1:334) = 0.600, 0.439, 0.002 (1:334) = 13.946, 0.000, 0.040 (1:334) = 1.821, 0.178, 0.005
PSOC 14.4 (6.24) 12.4 (6.44)
all 12.9 (6.20) 11.1 (6.40)
  aΔ PSIW vs. PSOC p = 0.000     
PHQ-15 PSIW 10.5 (5.41) 9.7 (5.44) (1:319) = 0.527, 0.468, 0.002 (1:319) = 3.444, 0.064, 0.011 (1:319) = 1.891, 0.170, 0.006
PSOC 11.4 (5.44) 10.9 (5.56)
all 11.0 (5.44) 10.3 (5.53)
  aΔ PSIW vs. PSOC p = 0.196     
PHQ-7 PSIW 9.5 (5.36) 8.2 (5.31) (1:341) = 0.500, 0.480, 0.001 (1:341) = 12.259, 0.001, 0.035 (1:341) = 0.858, 0.355, 0.003
PSOC 11.3 (5.53) 9.5 (5.43)
all 10.4 (5.50) 8.9 (5.41)
  aΔ PSIW vs. PSOC p = 0.005     
IS PSIW 30.7 (11.74) 29.7 (12.23) (1:317) = 1.453, 0.229, 0.005 (1:317) = 2.243, 0.135, 0.007 (1:317) = 1.719, 0.147, 0.007
PSOC 35.2 (12.12) 34.2 (12.33)
all 33.0 (12.13) 32.1 (12.47)
  aΔ PSIW vs. PSOC p = 0.001     
MBI-EE PSIW 3.9 (1.27) 3.8 (1.27) (1:325) = 0.012, 0.912, 0.000 (1:325) = 4.199, 0.041, 0.013 (1:325) = 0.758, 0.385, 0.002
PSOC 4.5 (1.24) 4.3 (1.18)
all 4.2 (1.28) 4.1 (1.25)
  aΔ PSIW vs. PSOC p = 0.000     
MBI-DP PSIW 3.2 (1.11) 3.2 (1.10) (1:316) = 0.150, 0.699, 0.000 (1:316) = 0.524, 0.470, 0.002 (1:316) = 0.008, 0.927, 0.000
PSOC 3.5 (1.22) 3.5 (1.18)
all 3.3 (1.17) 3.4 (1.15)
  aΔ PSIW vs. PSOC p = 0.015     
MBI-PA PSIW 4.5 (0.82) 4.5 (0.78) (1:324) = 0.760, 0.384, 0.002 (1:324) = 0.437, 0.509, 0.001 (1:324) = 0.001, 0.980, 0.000
PSOC 4.4 (0.91) 4.3 (0.92)
all 4.4 (0.86) 4.4 (0.86)
  aΔ PSIW vs. PSOC p = 0.115     
  1. Legend: a Δ PSIW vs. PSOC (p): Results of a t-test comparing PSIW and PSOC groups at baseline, η2 partial square eta (effect size), p level of significance