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Table 3 Pre-post estimates for symptoms of depression (PHQ) and anxiety (GAD)

From: Prompt mental health care, the Norwegian version of IAPT: clinical outcomes and predictors of change in a multicenter cohort study

Analysis

Missing data techniquea

N

ES (PHQ)

ES (GAD)

N clinical case

Recovery rate

Reliable recovery rate

Primary analyses

 Attended at least two sessions

MI

1295

1.09 (1.02,1.16)

1.03 (0.97,1.10)

994

65% (61%, 69%)

58% (54%, 61%)

 Attended at least two sessions - Latent

MI

1295

1.20 (1.07, 1.32)

1.13 (1.02, 1.24)

–

–

–

Sensitivity analyses

 Intention to treat

MI

1532

1.09 (1.03, 1.15)

1.04 (1.00, 1.10)

1172

64% (60%, 67%)

57% (53%, 60%)

 Intention to treat

LOCF

1519

0.74 (0.69, 0.79)

0.71 (0.64, 0.76)

1172

46% (43%, 49%)

41% (38%, 44%)

 Attended at least two sessions

LOCF

1294

0.88 (0.82, 0.94)

0.83 (0.78, 0.88)

994

57% (54%, 61%)

48% (45%, 51%)

 Completed pre- and post-treatment questionnaires

LD

864

1.13 (1.05, 1.21)

1.04 (0.97, 1.11)

663

69% (66%, 72%)

62% (59%, 66%)

Subgroup analyses for those with ≥2 sessions

 Started treatment at caseness

MI

994

1.53 (1.44, 1.63)

1.41 (1.32, 1.50)

994

65% (61%, 69%)

58% (54%, 61%)

 Started treatment at caseness - Latent

MI

994

1.79 (1.59, 1.99)

1.62 (1.46, 1.77)

–

–

–

 Pre-treatment symptoms > 6 months

MI

1059

1.08 (1.01, 1.15)

1.01 (0.94, 1.08)

820

64% (60%, 67%)

56% (52%, 60%)

 Pre-treatment symptoms > 6 months - Latent

MI

1059

1.18 (1.04,1.32)

1.10 (0.98, 1.23)

–

–

–

  1. aMI Multiple Imputation, LOCF Last Observation Carried Forward