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Table 3 Study Data for Trials Reporting Mean change in SGRQ Total Score and Patients Experiencing Any COPD Exacerbation

From: The association of lung function and St. George's respiratory questionnaire with exacerbations in COPD: a systematic literature review and regression analysis

Author, year

Treatment

Time point (weeks)

N Randomized

Definition of exacerbation

Annual exacerbation rate (any)

N with any exacerbation

Comparison data for Time to first exacerbation (Hazard ratio)

Mean change in SGRQ Total Score

Comparison data for SGRQ (treatment difference)

Bateman, 2010 [10]

Tiotropium 5 μg

48

1989

B+

0.69

685

Tio vs. placebo: 0.93

-4.7

Tio5 vs. placebo: -2.9

Placebo

48

2002

0.87

842

 

-1.8

--

Calverley, 2003 [30]

Budesonide/formoterol 320/9 mg (bid)

52

254

A

1.38

--

B + F vs. B: 0.77

--

B + F vs. B: -4.5

Budesonide 400 mg (bid)

52

257

1.6

--

B + F vs. F: 0.71

--

B + F vs. F: -3.4

Formoterol 9 mg (bid)

52

255

1.85

--

B + F vs. Placebo: 0.72

--

B + F vs. Placebo: -7.5

Placebo

52

256

1.8

--

--

--

--

Calverley, 2010 [12]

Beclomethasone/formoterol pMDI 400/24 μg

48

237

NR

0.414

64

--

-3.75

--

Budesonide/formoterol DPI 800/24 μg

48

242

0.423

64

--

-4.28

--

Formoterol DPI 12 μg

48

239

0.431

66

--

-2.9

--

Casaburi, 2002 [31]

Tiotropium 18 μg

52

550

B

0.76

198

--

-3.2

--

Placebo

52

371

0.95

156

--

0.5

--

Chapman, 2011 [13]

Indacaterol, 150 μg

52

420

A

--

--

Ind150 vs. Placebo: 0.82

-7.5

--

Indacaterol, 300 μg

52

418

--

--

Ind300 vs. Placebo: 0.86

-5.5

--

Placebo

52

425

--

--

--

-5.5

--

Dahl, 2010 [14]

Indacaterol 300 μg

52

437

A

--

--

Inda300 vs. Placebo: 0.77

-6.5

Inda300 vs. Placebo: -4.7

Indacaterol 600 μg

52

428

--

--

Inda600 vs. Placebo: 0.69

-7.2

Inda600 vs. Placebo: -4.6

Formoterol

52

435

--

--

F vs. Placebo: 0.77

-7

F vs. Placebo: -4

Placebo

52

432

--

--

--

-1.7

--

Decramer, 2013 [15]

Tiotropium bromide 18 μg

26

1721

C

--

--

--

-5.2

--

Indacaterol maleate 150 μg once-daily

26

1723

--

--

--

-4.5

--

Tiotropium bromide 18 μg

52

1721

0.61

547

--

-4.9

--

Indacaterol maleate 150 μg once-daily

52

1723

0.79

619

--

-4.5

--

Ferguson, 2008 [17]

Fluticasone propionate/salmeterol (FSC) 250/50

52

394

C

4.82

343

--

-3.49

FP/S vs. S: -1.86

Salmeterol 50 μg

52

388

5.78

335

--

-1.86

--

Vincken, 2002 [19]

Tiotropium 18 μg qd in the morning

52

356

B

0.73

125

--

-3.74

Tio18 vs. Ipra40: -3.3

Ipratropium 40 μg qid

52

179

0.96

82

--

-0.44

--

Wedzicha, 2014 [32]

beclomethasone dipropionate/formoterol fumarate (BDP/FOR) 100/6 μg, 2 inhalations BID

48

602

F

0.8

264

BDP + F vs. F: 0.8

-3.55

BDP/F vs. F: -2.78

Formoterol fumarate (FOR) 12 μg, 1 inhalation BID

48

597

1.12

294

--

-0.77

--

Wouters, 2005 [20]

Salmeterol/fluticasone (3 month run in period of salmeterol 50 μg and fluticasone 500 μg bid)

52

189

E

--

115

--

2.4

S/F vs. S: -0.89

Salmeterol (3 month run in period of salmeterol 50 μg and fluticasone 500 μg bid)

52

184

--

109

--

3.2

--

  1. Exacerbation Definitions:
  2. A:Symptom deterioration requiring antibiotics, systemic corticosteroids, and/or hospitalization
  3. B:A complex of respiratory events lasting ≥3 days
  4. B+:A complex of respiratory events lasting ≥3 days requiring treatment
  5. C:Worsening of at least two symptoms for at least two days
  6. E:If a patient has in ≥2 consecutive days used ≥3 extra inhalations of salbutamol per 24 hours above their reference rescue value
  7. F:An acute event characterized by a worsening of the patient's respiratory symptoms that is beyond normal day-to-day variations and leads to a change in medication
  8. -- = Not reported