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Table 4 Visits to general practices: interrupted time series analysis (seasonally adjusted, average calls per day)

From: Ambulances are for emergencies: shifting behaviour through a research-informed behaviour change campaign

 

Phase 1

Will’s Story

Phase 2

Meet the Team

4 months

10 months

14 months

20 months

3 months

9 months

Slope pre-intervention

136.9

136.9

136.9

136.9

161.5

161.5

 sig.

0.01

0.01

0.01

0.01

0.00

0.00

Change in slope pre–post

188.4

188.4

188.4

188.4

125.7

125.7

 sig.

0.68

0.68

0.68

0.68

0.87

0.87

Level effect

253.8

563.4

769.9

1079.5

− 547.7

− 533.3

 sig.

0.77

0.68

0.67

0.67

0.47

0.48

SE

870.1

1373.6

1803.1

2493.0

758.2

756.2

Tinv

1763.1

2770.2

3627.4

5000.3

1525.3

1516.7

CI–

− 1509.3

− 2206.7

− 2857.6

− 3920.8

− 2073.1

− 2050.0

CI+

2016.8

3333.6

4397.3

6079.9

977.6

983.4

Predicted value

79,958

82,137

82,485

82,403

82,409

82,245

Relative effect

0.3%

0.7%

0.9%

1.3%

−0.7%

−0.6%