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Table 6 Outcomes and data fields assessed in pilot: records available and feasibility assessment

From: Assessing the impact of specialist home visiting upon maltreatment in England: a feasibility study of data linkage from a public health trial to routine health and social care data

Outcomes

Data source: native field name

Missing (n)

Commentary of findings

Impact

Primary

 Child in Need (CIN) status as of 31 March each year

NPD > CIN:

Referral date

1

No data appear across one record—record to be excluded (this will apply to all fields below) Note: 34 records with dates prior to time point ranges (1997–2007). This is expected.

None

 

NPD > CIN:

Referral—no further action

42

No data collected in 2008/2009 time point (accounts for 38 records). Some blanks appear in 2009/2010 time point; however, the referral date on these records is prior to 1st April of that data collection year. *Assumption that time point cycle is Apr–Mar.

Low: assumption missing data indicate further action was required and that the child was in need

 

NPD > CIN:

Reason for closure

142

No pattern—further investigation required

As above

Secondary a

 CIN categorisation

NPD > CIN:

Category of Abuse

329

Only data from 2008/2009 accessed in pilot. For main phase data from 2012/2003 will be accessed and also ‘NPD > CIN: Latest category of abuse’ will be included which may improve data quality.

Still to be determined

 Child looked after (CLA) status (1)

NPD > CLA:

Category of need; Legal status; Placement; REC

0

All records returned are complete.

None

 Child Protection registration (plan) (1)

NPD > CIN:

Child Protection Plan (CPP) Indicator

195

Expected—all missing from 2010/2011 time point onwards. Data not collected during these years.

Low: CPP flag can be determined from other fields

 

NPD > CIN:

No. of previous Child Protection Plans

320

No pattern to missingness. Only 11 records have a value recorded, 9 of these are zero.

As above

 

NPD > CIN:

Child Protection Plan start date

320

Expected—not all children will have had a CPP. Only 11 records have a date recorded, these correspond with data captured in the ‘no. of previous CPPs’ above.

As above

 

NPD > CIN:

Child Protection Plan end date

327

Expected—only 4 records have an end date recorded. Corresponds with those records where a start date is recorded. Data check done—end dates are after the start date.

As above

 Exploratory Markov chain modellingb

NPD > CIN:

Date of initial child protection conference

327

Expected—not all children would have had a child protection conference. However further checks required to confirm validity of data.

Medium: Low numbers may impact analysis

 Injuries and ingestions

NHSD > A&E:

A&E diagnosis (diag n)

5981

45% missing (1650/6336 missing in BB trial—26% missing)

Medium: All diag/treat/inv. fields to be used in combination to define inj/ingc

 

NHSD > A&E:

A&E diagnosis2 char (diag2 n D)

3604

27% missing (1849/6336 missing in BB trial—29% missing)

As above

 

NHSD > A&E:

A&E investigation (invest n)

1728

13% missing (1396/6336 missing in BB trial—22% missing)

As above

 

NHSD > A&E:

A&E investigation2 char (invest n D)

1712

13% missing (1395/6336 missing in BB trial—22% missing)

As above

 

NHSD > A&E:

A&E treatment (treat n)

2349

18% missing (1411/6336 missing in BB trial—22% missing)

As above

 

NHSD>A&E:

A&E treatment – 2 Char (treat2 n D)

2126

16% missing (1417/6336 missing in BB trial—22% missing)

As above

 

NHSD > A&E:

A&E diagnosisAnatomical Area (diaga n D)

9281

70% missing (4725/6336 missing in BB trial—74% missing)

 
  1. (1) small numbers may be an issue—descriptive analysis will be used if necessary
  2. aAdditional fields were retrieved for secondary outcomes and assessed solely for presence (Special Educational Needs, Disability, Day care attendance, Early Years assessment, School attendance, Key stage one attainment)
  3. bTo explore probability of progression through each stage of child protection process
  4. cSame fields also contribute to assessment of subsequent pregnancies (via pregnancy-related A&E attendances)