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. 2021 Sep 14;11(10):e046417. doi: 10.1136/bmjopen-2020-046417

Table 3.

Obtaining a joint preferred specification for social care, healthcare and public health expenditure by combining full specifications with forward selection (second-stage results) (created by the authors)

Variables (1) (2) (3) (4)
All causes All causes All causes All causes
2013/2014 PB/GSS/PH spend 2013/2014 PB/GSS/PH spend 2013/2014 PB/GSS/PH spend 2013/2014 PB/GSS/PH spend
SYLLR 2013/2014/2015 SYLLR 2013/2014/2015 SYLLR 2013/2014/2015 SYLLR 2013/2014/2015
Outcome model Outcome model Outcome model Outcome model
Instrument PB/GSS/PH spend Instrument PB/GSS/PH spend Instrument PB/GSS/PH spend Instrument PB/GSS/PH spend
Weighted Weighted Weighted Weighted
IV second stage IV second stage IV second stage IV second stage
Parsimonious specification Specification_2 Specification_3 Specification_4
11 instruments 7 instruments 5 instruments 4 instruments
Public health expenditure per person −0.051
(0.039)
−0.043
(0.047)
−0.060
(0.044)
−0.099**
(0.045)
CCG (PB) healthcare spend per person −0.862***
(0.223)
−0.461
(0.313)
−0.637*
(0.369)
−0.693**
(0.333)
Social service (GSS) spend per person −0.206
(0.133)
−0.469***
(0.161)
−0.370*
(0.205)
−0.471**
(0.237)
% population aged 16–74 that are permanently sick 0.649***
(0.046)
0.651***
(0.054)
0.672***
(0.052)
0.528***
(0.073)
% population providing unpaid care −0.381***
(0.086)
−0.388***
(0.096)
−0.400***
(0.097)
−0.143
(0.118)
% population in white ethnic group 0.163***
(0.042)
0.195***
(0.043)
0.180***
(0.046)
0.299***
(0.078)
Older adult: social service need per person 0.416***
(0.143)
Constant 13.352***
(1.733)
10.204***
(2.389)
11.655***
(2.873)
12.245***
(2.546)
Observations 150 150 150 150
Endogeneity test statistic 10.644 17.686 21.100 23.214
Endogeneity p value 0.014 0.001 0.000 0.000
Hansen-Sargan test statistic 25.690 10.432 2.173 0.080
Hansen-Sargan p value 0.001 0.034 0.337 0.778
Pesaran-Taylor reset statistic 0.052 0.372 0.080 0.001
Pesaran-Taylor p value 0.820 0.542 0.777 0.972
SW_PB F-statistic 5.977 6.833 7.878 13.534
SW_PB p value 0.000 0.000 0.000 0.000
SW_GSS F-statistic 4.939 5.521 6.135 9.722
SW_GSS p value 0.000 0.000 0.001 0.000
SW_PH F-statistic 18.451 22.092 30.944 46.946
SW_PH p value 0.000 0.000 0.000 0.000

Robust SEs in parentheses.

***p<0.01, **p<0.05, *p<0.1.

CCG, Clinical Commissioning Group; PH, public health; SW, Sanderson-Windmeijer.