| |
Current study
|
Watson
|
Wood-Baker
|
McGeoch
|
|---|
|
Procedure
| | | | |
|
Recruitment
|
OC + GP
|
GP
|
GP
|
GP
|
|
Pilot-study
|
+
|
+
|
-
|
+
|
|
Intervention
| | | | |
|
- Early contact
|
+
|
+
|
+
|
+
|
|
- Self-initiation drugs
|
-
|
+
|
+
|
+
|
|
- Reinforcement
|
+
|
-
|
-
|
-
|
|
Outcome
|
exa-rt
|
SGRQ
|
SGRQ
|
SGRQ
|
|
Validity
| | | | |
|
Randomization
|
individual
|
individual
|
clustered
|
clustered
|
|
Blinding
|
pt + inv
|
-
|
-
|
-
|
|
Stratification
|
by centre
|
-
|
-
|
-
|
|
Statistics
| | | | |
|
Follow-up (mths)
|
6
|
6
|
12
|
12
|
|
n
| |
56
|
102
|
151
|
|
Powered on
|
Δ exa-rt = 1
|
Δ SGRQ = 5.7
|
Δ SGRQ = 4
|
Δ SGRQ = 4
|
|
SSC
|
245
|
124
|
124
|
160
|
- OC, outpatient clinic; GP, general practice; exa-rt, exacerbation recovery time; SGRQ, St George respiratory questionnaire n, number of patients; SSC, sample size calculation; pt, patient; inv, investigator.
