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Risk of bias summary: review authors' judgements about each risk of bias item for each included study.
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Figure 1

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.

Forest plot of comparison: 1 Hospital at Home versus Standard Inpatient Care, outcome: 1.1 Hospital inpatient readmissions.
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Figure 2

Forest plot of comparison: 1 Hospital at Home versus Standard Inpatient Care, outcome: 1.1 Hospital inpatient readmissions.

Forest plot of comparison: 1 Hospital at Home versus Standard Inpatient Care, outcome: 1.2 Mortality.
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Figure 3

Forest plot of comparison: 1 Hospital at Home versus Standard Inpatient Care, outcome: 1.2 Mortality.

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 1 Hospital inpatient readmissions.
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Analysis 1.1

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 1 Hospital inpatient readmissions.

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 2 Mortality.
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Analysis 1.2

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 2 Mortality.

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 3 FEV1 (lung function).
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Analysis 1.3

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 3 FEV1 (lung function).

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 4 FVC (lung function).
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Analysis 1.4

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 4 FVC (lung function).

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 5 FEV1/FVC % (lung function).
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Analysis 1.5

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 5 FEV1/FVC % (lung function).

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 6 Health‐related quality of life measured with SGRQ.
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Analysis 1.6

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 6 Health‐related quality of life measured with SGRQ.

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 7 Satisfaction with care.
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Analysis 1.7

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 7 Satisfaction with care.

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 8 Preference for "Hospital at home care".
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Analysis 1.8

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 8 Preference for "Hospital at home care".

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 9 Average direct costs per patients.
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Analysis 1.9

Comparison 1 Hospital at Home versus Standard Inpatient Care, Outcome 9 Average direct costs per patients.

Summary of findings for the main comparison. Hospital at home for exacerbations of COPD

Hospital at home for exacerbations of COPD

Patient or population: exacerbations of COPD
Intervention: Hospital at home ‐ regular home visits by trained respiratory nurse supported by hospital team

Control: usual care in hospital

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

No of Participants
(studies)

Quality of the evidence
(GRADE)

Comments

Assumed risk

Corresponding risk

Control

Hospital at home

Readmission to hospital, inpatient.

Number of people experiencing one or more readmissions (follow‐up: 1 to 6 months)

36 readmissions to hospital per 100

9 fewer readmissions per 100 (15 fewer to 0 fewer)

RR 0.76
(0.59 to 0.99)

870
(8 studies)

⊕⊕⊕⊝
moderate1,2

Mortality

(follow‐up: 2 to 6 months)

10 deaths per 100

3 fewer deaths per 100
(6 fewer to 0 more)

RR 0.65
(0.4 to 1.04)

845
(7 studies)

⊕⊕⊕⊝
moderate2

Patient satisfaction

Number of people stating to be very satisfied with treatment (follow‐up: 0 to 2 weeks after discharge)

89 per 100

5 more very satisfied patient per 100
(4 fewer to 15 more)

RR 1.06
(0.96 to 1.17)

158
(2 studies)

⊕⊕⊝⊝
low3,4

Carer satisfaction

Number of carers stating to be very satisfied with treatment (follow‐up: 2 weeks after discharge)

93 per 100

3 fewer very satisfied carers per 100
(20 fewer to 18 more)

RR 0.97
(0.79 to 1.19)

34
(1 study)

⊕⊝⊝⊝
very low3,4,5

FEV1
litres

Mean FEV1 in the intervention groups was 0.13 standard deviations higher

(0.10 lower to 0.36 higher)

432
(3 studies)

⊕⊕⊝⊝
low2,3

Quality of life
SGRQ

(follow‐up: at discharge)

See comment

See comment

See

comment

332
(3 studies)

⊕⊝⊝⊝
very low2,3

One trial did not report standard deviations, and one study only provided SGRQ scores for a subgroup of 50 participants. This can introduce bias into the overall combined result, and we decided not to combine the results in meta‐analysis.

Direct costs

(follow‐up: 1 to 6 months)

See comment

See comment

See comment

339
(3 studies)

⊕⊝⊝⊝
very low6,7

The trials were carried out in different years and countries, and reported different currencies. We considered it inappropriate to pool the results in meta‐analysis.

*The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
CI: Confidence interval; RR: Risk ratio;

GRADE Working Group grades of evidence
High quality: Further research is very unlikely to change our confidence in the estimate of effect.
Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low quality: We are very uncertain about the estimate.

1 We did not downgrade due to inconsistency, although some heterogeneity was encountered (I2 = 34 %, removing the study at high risk of bias reduced heterogeneity to I2 = 16 %)
2 We downgraded one for imprecision due to a wide confidence interval
3 We downgraded as this was a subjective outcome at high risk of bias as patients or carers were not blinded (not possible)
4 We downgraded one for imprecision as there were few events and people
5 We downgraded one for imprecision as there was a single study only
6 We downgraded one due to unexplained heterogeneity
7 We downgraded two due to different countries and conditions (indirectness)

Figuras y tablas -
Summary of findings for the main comparison. Hospital at home for exacerbations of COPD
Table 1. Percentage recruitment (number of patients entered into trial / total screened)

Study Reference

Total recruited

Total screened

Percentage

Cotton 2000

81

360

22.5

Davies 2000

150

583

25.7

Hernandez 2003

244

629

38.7

Nicholson 2001

25

168

14.8

Nissen 2007

44

390

11.3

Ojoo 2002

60

328

18.2

Ricauda 2008

104

529

19.7

Skwarska 2000

184

718

25.6

TOTALS

744

2786

26.7

Figuras y tablas -
Table 1. Percentage recruitment (number of patients entered into trial / total screened)
Comparison 1. Hospital at Home versus Standard Inpatient Care

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Hospital inpatient readmissions Show forest plot

8

870

Risk Ratio (M‐H, Random, 95% CI)

0.76 [0.59, 0.99]

2 Mortality Show forest plot

7

845

Risk Ratio (M‐H, Random, 95% CI)

0.65 [0.40, 1.04]

3 FEV1 (lung function) Show forest plot

3

432

Std. Mean Difference (IV, Random, 95% CI)

0.13 [‐0.10, 0.36]

3.1 Change post‐bronchodilator (L)

1

150

Std. Mean Difference (IV, Random, 95% CI)

‐0.09 [‐0.43, 0.25]

3.2 Change from baseline (L)

1

60

Std. Mean Difference (IV, Random, 95% CI)

0.37 [‐0.14, 0.88]

3.3 Actual value at end of study (L)

1

222

Std. Mean Difference (IV, Random, 95% CI)

0.19 [‐0.07, 0.46]

4 FVC (lung function) Show forest plot

2

282

Mean Difference (IV, Random, 95% CI)

0.14 [‐0.04, 0.33]

4.1 Change from baseline (L)

1

60

Mean Difference (IV, Random, 95% CI)

0.05 [‐0.25, 0.35]

4.2 Actual value at end of study (L)

1

222

Mean Difference (IV, Random, 95% CI)

0.20 [‐0.04, 0.44]

5 FEV1/FVC % (lung function) Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Subtotals only

6 Health‐related quality of life measured with SGRQ Show forest plot

3

Std. Mean Difference (IV, Random, 95% CI)

Totals not selected

6.1 Percentage improvement (discharge ‐ initial admission score)

1

Std. Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

6.2 Mean change (discharge ‐ initial admission score)

2

Std. Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

7 Satisfaction with care Show forest plot

2

Risk Ratio (M‐H, Random, 95% CI)

Subtotals only

7.1 Patient satisfaction

2

158

Risk Ratio (M‐H, Random, 95% CI)

1.06 [0.96, 1.17]

7.2 Carer satisfaction

1

34

Risk Ratio (M‐H, Random, 95% CI)

0.97 [0.79, 1.19]

8 Preference for "Hospital at home care" Show forest plot

1

88

Risk Ratio (M‐H, Random, 95% CI)

1.69 [1.27, 2.25]

8.1 Patient preference

1

54

Risk Ratio (M‐H, Random, 95% CI)

1.63 [1.18, 2.24]

8.2 Carer preference

1

34

Risk Ratio (M‐H, Random, 95% CI)

1.98 [1.05, 3.73]

9 Average direct costs per patients Show forest plot

3

Mean Difference (IV, Random, 95% CI)

Totals not selected

9.1 Euro [1000 €]

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

9.2 USD [1000 $]

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

9.3 AUD [1000 $]

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

Figuras y tablas -
Comparison 1. Hospital at Home versus Standard Inpatient Care