Table 1.

Mean differences in improvement from baseline in scores on the Short Health Anxiety Inventory in patients with health anxiety in medical clinics, randomised to cognitive behavioural therapy or standard care; results shown for nurse therapists, psychologists and other (graduate) therapists over 8 years6,7

Comparison by therapist typeDifference95% confidence intervalProbability
Nurses vs standard care at 3 months3.770.33–7.200.0316
Nurses vs standard care at 6 months8.454.99–11.90<0.0001
Nurses vs standard care at 12 months4.420.90–7.940.0139
Nurses vs standard care at 24 months4.160.60–7.720.0221
Nurses vs standard care at 60 months7.903.98–11.81<0.0001
Nurses vs standard care at 96 months9.244.72–13.76<0.0001
Nurses versus other therapists at 3 months3.67−0.53–7.880.0869
Nurses versus other therapists at 6 months3.80−0.52–8.120.0848
Nurses versus other therapists at 12 months3.18−1.11–7.480.1461
Nurses versus other therapists at 24 months1.96−2.43–6.350.3809
Nurses versus other therapists at 60 months6.401.60–11.200.0091
Nurses versus other therapists at 96 months9.644.27–15.020.0005
Assistant psychologists vs standard care at all times3.610.48–6.730.0239
Graduates vs standard care at all times−0.51−4.68–3.660.8088
Nurses vs standard care at all times6.323.64–9.01<0.0001
Nurses vs other therapists at all times4.781.50–8.050.0043
  • A score on the SHAI indicates pathological health anxiety if the total is 20 or more; a score of 10 is normal as all should have some concern over their health. The difference of 9.6 points at 96 months between nurse therapists and others shows both the success and persistence of the therapy. Reproduced with permission from Tyrer P, Wang D, Crawford M et al. Sustained benefit of cognitive behaviour therapy for health anxiety in medical patients (CHAMP) over 8 years: a randomised-controlled trial. Psychol Med 2020 [Epub ahead of print]..