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Table 5 Association between malaria control scale-up over time and paediatric blood transfusions - interrupted time series

From: Association between malaria control and paediatric blood transfusions in rural Zambia: an interrupted time-series analysis

 

Dependent variable: paediatric blood transfusions

 

(1)

(2)

Monthly trend 2000-2003

−0.60***

−0.52***

 

(0.12)

(0.10)

Difference in monthly use 2004–2008 (relative to 2000–2003)

−10.58***

 
 

(3.35)

 

Monthly trend 2004-2008

−0.02

 
 

(0.04)

 

Difference in monthly use 2004–2006 (relative to 2000–2003)

 

−19.06***

  

(3.56)

Monthly trend 2004-2006

 

0.34***

  

(0.10)

Difference in monthly use 2007–2008 (relative to 2000–2003)

 

−27.47***

  

(6.56)

Monthly trend 2007-2008

 

−0.14

  

(0.22)

February

5.79

4.88

 

(4.53)

(4.70)

March

15.00

13.96

 

(9.64)

(9.86)

April

26.99*

26.43*

 

(14.34)

(13.81)

May

18.69

18.87

 

(13.41)

(12.64)

June

−9.22

−8.40

 

(11.51)

(11.79)

July

−16.37

−15.30

 

(10.70)

(11.78)

August

−20.81**

−20.01*

 

(10.22)

(11.76)

September

−23.94**

−23.87**

 

(9.84)

(11.26)

October

−24.08***

−24.90**

 

(8.96)

(9.95)

November

−24.54***

−26.06***

 

(7.47)

(8.03)

December

−9.89**

−11.60**

 

(4.70)

(5.56)

Constant

56.59***

55.12***

 

(7.62)

(7.45)

Observations

108

108

Mean of dependent variable

22.79

22.79

Wald Chi-Squared

2734.85

3740.52

  1. *Significant at 10%; **significant at 5%; ***significant at 1%. Coefficient standard errors are noted in parentheses.
  2. Regressions use an autoregressive-moving-average model with 2 lags and robust standard errors. The variables are identified as in Table 3. The month variables represent a dummy variable for each month. The base (omitted) variable is January.