HA Data Quality - NHS Performance Indicators

NHS Performance Indicators : July 2000 Health Authority Data Quality Indicators

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Data Quality of HES based HLPIs

Introduction

This year, for the first time, Data Quality indicators have been produced for the HES based HLPIs. The HES based indicators can be grouped into two types, those looking at admissions into hospitals (chronic care management and acute care management) and those looking at procedures in hospital (surgery rates (hips, knees, cataracts), CHD surgery (CABG, PTCA) and inappropriately used surgery (D&Cs, grommets)). A DQI for each of these two types of indicator has been produced for each HA.

There are two elements involved in constructing the DQI, coverage and record quality, and it is the assessment of these two elements which determines the DQI for the HA.

Coverage

HLPI values based on data with a large percentage of missing HES records (low coverage) would be misleading. For each HA the level of inpatient activity is measured by the total number of FCEs. This total is compared to the resident population for the health authority and expressed as the number of units of activity per 100 head of population. Those areas with missing HES records (ie. low coverage) will have low levels of activity per head of population. The cut-off is 14 units of activity per 100 head of population and HAs with activity levels lower than this are excluded.

Record Quality

The HLPIs are not only dependent upon reasonable coverage levels but also require key fields within each record to have been completed. For each of the two types of HES indicators there are several key fields essential to the production of the HLPI. A count is made of the records in which one or more of the key fields contains missing or invalid data. Those HAs with less than 10% of records with missing or invalid data in key fields are labelled as having "good" record quality, whilst those with more than 10% but less than 30% as "mediocre". Any HAs with more than 30% of records with missing or invalid data are labelled as having "low" record quality and are excluded.

The Data Quality Indicator

Each HA receives two DQI's, one for each of the two types of HES based HLPIs. Each of the DQIs is generated from a contribution of the coverage and record quality elements. The DQI mark given to each HA, for each type of HES indicator, is therefore calculated as follows:

"+" = HAs with more than 14 units of activity per 100 head of population and less than 10% of relevant FCE's missing / invalid.
"-" = HAs with more than 14 units of activity per 100 head of population and less than 30% of relevant FCE's missing / invalid (who did not receive a "+" DQI mark).
"E1" = HAs excluded from graphs because of poor coverage (less than 14 units of activity per 100 head of population).
"E2" = HAs excluded from graphs because of poor quality data (more than 30% of relevant FCE's missing / invalid).
"E3" = HAs excluded from graphs because of poor coverage (less than 14 units of activity per 100 head of population) and poor quality data (more than 30% of relevant FCE's missing / invalid).

Health Authorities who receive an "E" quality mark are encouraged to review their HES data procedures in order to improve data quality in future years.

Full data quality information for Health Authorities for the latest year, 1998-99, is provided in the data quality tables in Annex [x]. Similar tables for the preceding two years are available on request.

Worked Example

Consider the following data for HA X which is used to calculate their data quality mark for primary care effectiveness indicators:

Total FCE's = 52,500
Total Population = 275,000
% of FCE's for Primary Care Effectiveness Indicators with any missing / invalid fields = 22.6%

Coverage:

Units of activity per 100 head of population = 52,500 / 2750 = 19.09

Record Quality:

% of FCE's with missing / invalid key fields = 22.6%

Data Quality Mark:

HA receives a "-" DQI mark as they have more than 14 units of activity per 100 head of population and less than 30% of relevant FCE's missing / invalid (but more than 10% of relevant FCE's missing / invalid).

Data Quality Indicator 1998/99

		Procedures Indicators Quality Mark	Admissions Indicators Quality Mark	Total FCE's	Total Population	Units of activity per 100 head of pop	% of FCEs for Procedures Indicators with any missing / invalid fields	% of FCEs for Admissions Indicators with any missing / invalid fields
QA2	Hillingdon	+	+	50166	251165	20	0.27%	2.59%
QA3	Kensington Chelsea and Westminster	+	+	65772	390772	17	0.73%	3.95%
QA4	Enfield and Haringey	+	+	100882	486441	21	0.36%	2.35%
QA5	Redbridge and Waltham Forest	+	+	95405	453316	21	0.14%	1.36%
QA6	Bedfordshire	+	+	109723	556628	20	1.22%	7.44%
QA7	Berkshire	+	+	139294	800180	17	0.69%	0.58%
QA8	Buckinghamshire	+	+	120512	681873	18	0.55%	0.29%
QAA	Bexley and Greenwich	+	+	94612	432933	22	0.42%	3.04%
QAC	Bromley	+	+	67306	297118	23	1.44%	9.74%
QAD	Croydon	+	+	63895	338217	19	1.11%	5.18%
QAE	East Kent	+	+	142029	601059	24	0.15%	0.72%
QAF	West Kent	+	+	179313	973502	18	0.16%	0.78%
QAG	Kingston and Richmond	+	+	52662	334032	16	0.67%	2.71%
QAH	Lambeth Southwark and Lewisham	+	+	156074	745240	21	2.59%	5.52%
QAJ	Merton Sutton and Wandsworth	+	+	131271	626992	21	0.74%	1.81%
QAK	East Surrey	+	+	74140	419940	18	2.35%	4.82%
QAL	West Surrey	+	+	117242	640601	18	1.99%	6.35%
QAM	East Sussex Brighton and Hove	+	+	160556	747183	21	2.62%	6.34%
QAN	West Sussex	+	+	152299	751845	20	1.53%	2.81%
QAP	Barking and Havering	+	+	81636	383888	21	0.10%	1.17%
QAQ	Barnet	+	+	61118	331548	18	0.31%	9.32%
QAR	Brent and Harrow	+	+	93602	464447	20	0.40%	3.70%
QAT	Camden and Islington	+	+	83282	367569	23	0.61%	3.90%
QAV	Ealing Hammersmith and Hounslow	+	+	133791	671169	20	0.71%	3.24%
QAW	East London and the City	+	+	139596	612425	23	0.17%	2.10%
QAX	North Essex	+	+	173595	897085	19	0.23%	0.74%
QAY	South Essex	+	+	146056	708537	21	0.18%	1.16%
QC1	South Lancashire	+	+	88621	312661	28	0.30%	0.56%
QC2	Liverpool	+	+	142862	461481	31	0.14%	0.71%
QC3	Manchester	+	+	125202	429812	29	0.10%	1.29%
QC4	Morecambe Bay	+	+	82582	310300	27	0.21%	5.40%
QC5	St. Helen's and Knowsley	+	+	95552	333002	29	0.16%	0.62%
QC6	Salford and Trafford	+	+	126221	446222	28	0.07%	1.96%
QC7	Sefton	+	+	73367	287743	25	0.20%	2.47%
QC8	Stockport	+	+	79965	292808	27	1.07%	3.58%
QC9	West Pennine	+	+	140827	472038	30	0.08%	0.71%
QCC	Northamptonshire	+	+	142478	615796	23	1.51%	0.32%
QCE	Oxfordshire	+	+	107169	616707	17	3.30%	0.32%
QCF	Suffolk	+	+	155770	671095	23	0.13%	0.44%
QCG	Barnsley	+	+	68713	228103	30	0.22%	0.51%
QCH	North Derbyshire	+	+	88553	370192	24	0.16%	1.34%
QCJ	Southern Derbyshire	+	+	137518	567457	24	0.20%	0.33%
QCK	Doncaster	+	+	77470	290468	27	0.59%	0.65%
QCL	Leicestershire	+	+	230352	928716	25	2.24%	2.09%
QCM	Lincolnshire	+	+	150113	623130	24	0.14%	0.20%
QCN	North Nottinghamshire	+	+	103141	388889	27	0.04%	0.37%
QCP	Nottingham	+	+	153913	642698	24	0.07%	3.78%
QCQ	Rotherham	+	+	56941	254424	22	0.29%	2.30%
QCR	Sheffield	+	+	137069	531141	26	0.21%	0.37%
QCT	Bury and Rochdale	+	+	116689	391007	30	0.05%	0.30%
QCV	North Cheshire	+	+	83550	311908	27	0.98%	2.95%
QCW	South Cheshire	+	+	163863	672372	24	1.27%	1.50%
QCX	East Lancashire	+	+	164674	511233	32	0.69%	0.42%
QCY	North West Lancashire	+	+	145798	466274	31	0.22%	2.21%
QD1	North and Mid Hampshire	+	+	120439	556936	22	0.26%	1.40%
QD2	Portsmouth and South East Hampshire	+	+	131135	544685	24	0.20%	3.68%
QD3	Southampton and South West Hampshire	+	+	133754	542337	25	0.06%	0.65%
QD4	Isle of Wight	+	+	30438	126989	24	0.03%	0.28%
QD5	Somerset	+	+	119281	489280	24	0.26%	0.87%
QD6	South and West Devon	+	+	153586	589124	26	0.19%	5.82%
QD7	Wiltshire	+	+	125428	605511	21	0.63%	2.87%
QD8	Avon	+	+	238306	999295	24	1.60%	1.13%
QD9	Birmingham	+	+	238243	1013431	24	0.07%	1.83%
QDA	Wigan and Bolton	+	+	163413	577985	28	0.04%	0.35%
QDC	Wirral	+	+	94491	327145	29	1.95%	2.02%
QDD	Bradford	+	+	135812	483285	28	2.27%	3.14%
QDE	County Durham	+	+	150210	607770	25	0.14%	1.54%
QDF	East Riding	+	+	142207	574533	25	3.11%	1.03%
QDG	Gateshead and South Tyneside	+	+	104396	353466	30	0.18%	0.18%
QDH	Leeds	+	+	175229	727389	24	1.09%	2.24%
QDJ	Newcastle and North Tyneside	+	+	127428	470071	27	0.33%	0.54%
QDK	North Cumbria	+	+	76445	319255	24	0.31%	0.77%
QDL	South Humber	+	+	76239	308584	25	0.22%	0.28%
QDM	Northumberland	+	+	82028	309642	26	0.27%	0.35%
QDN	Sunderland	+	+	70847	292307	24	0.05%	0.09%
QDP	Tees	+	+	158011	556344	28	0.11%	5.24%
QDQ	Wakefield	+	+	77937	318804	24	0.62%	0.67%
QDR	North Yorkshire	+	+	169114	742404	23	0.36%	1.55%
QDT	Calderdale and Kirklees	+	+	140612	583774	24	0.43%	8.35%
QDV	Cornwall and Isles of Scilly	+	+	131414	490370	27	0.09%	2.01%
QDW	Dorset	+	+	198160	691215	29	0.07%	4.78%
QDX	North and East Devon	+	+	123435	479264	26	0.28%	0.45%
QDY	Gloucestershire	+	+	130045	557257	23	0.12%	0.19%
QEA	Coventry	+	+	73564	304334	24	0.80%	0.18%
QEC	Dudley	+	+	69143	311468	22	0.11%	1.08%
QED	Herefordshire	+	-	36457	167920	22	0.14%	11.37%
QEE	Sandwell	+	+	71307	290521	25	0.07%	0.92%
QEF	Shropshire	+	+	92715	430212	22	0.23%	2.10%
QEG	Solihull	+	+	40807	205649	20	0.06%	0.42%
QEH	North Staffordshire	+	+	115880	469214	25	0.03%	0.55%
QEJ	South Staffordshire	+	+	134032	592066	23	0.07%	2.06%
QEK	Walsall	+	+	64052	261170	25	0.12%	2.22%
QEL	Warwickshire	+	+	113313	506713	22	0.31%	1.42%
QEM	Wolverhampton	+	+	60846	241623	25	0.07%	9.00%
QEN	Worcestershire	+	+	109250	538200	20	0.94%	1.86%
QEP	East and North Hertfordshire	+	+	103463	499598	21	0.17%	1.11%
QEQ	West Hertfordshire	+	+	101662	534018	19	0.87%	6.58%
QER	Cambridgeshire	+	+	154772	719767	22	0.71%	0.35%
QET	Norfolk	+	+	198236	790275	25	0.50%	0.93%

Key to Quality Marks
		Procedures Indicators	Admissions Indicators
"+" = GOOD QUALITY MARK		99	98
"-" = MEDIOCRE QUALITY MARK		0	1
"E1" = EXCLUDED - Poor coverage		0	0
"E2" = EXCLUDED - Poor quality		0	0
"E3" = EXCLUDED - Poor coverage and quality		0	0
TOTAL NUMBER OF HAs		99	99

+	HAs with more than 14 units of activity per head of population and less than 10% of relevant FCEs missing / invalid
-	HAs with more than 14 units of activity per head of population and less than 30% of relevant FCEs missing / invalid
E1	Excluded from graphs because of poor coverage (less than 14 units of activity per head of population)
E2	Excluded from graphs because of poor quality data (more than 30% of relevant FCEs missing / invalid)
E3	Excluded from graphs because of poor coverage and poor quality data

HAs with an "E1" Quality Mark
		Procedures Indicators	Admissions Indicators
None

HAs with an "E2" Quality Mark
		Procedures Indicators	Admissions Indicators
None

HAs with an "E3" Quality Mark
		Procedures Indicators	Admissions Indicators
None

Data Quality Indicator 1997/98

		Procedures Indicators Quality Mark	Admissions Indicators Quality Mark	Total FCE's	Total Population	Units of activity per 100 head of pop	% of FCEs for Procedures Indicators with any missing / invalid fields	% of FCEs for Admissions Indicators with any missing / invalid fields
QA2	Hillingdon	-	-	51565	251165	21	25.77%	24.89%
QA3	Kensington Chelsea and Westminster	E2	E2	68679	390772	18	55.80%	56.47%
QA4	Enfield and Haringey	+	+	101438	486441	21	6.13%	7.08%
QA5	Redbridge and Waltham Forest	+	+	94313	453316	21	1.57%	2.66%
QA6	Bedfordshire	+	-	101216	556628	18	4.82%	11.81%
QA7	Berkshire	+	+	125203	800180	16	3.47%	2.51%
QA8	Buckinghamshire	+	+	122178	681873	18	2.87%	2.20%
QAA	Bexley and Greenwich	+	+	89515	432933	21	1.96%	3.40%
QAC	Bromley	+	-	66091	297118	22	3.40%	10.30%
QAD	Croydon	+	+	65457	338217	19	9.71%	5.44%
QAE	East Kent	+	+	137819	601059	23	1.34%	0.96%
QAF	West Kent	+	+	174377	973502	18	7.25%	5.20%
QAG	Kingston and Richmond	-	-	49166	334032	15	10.87%	12.06%
QAH	Lambeth Southwark and Lewisham	+	+	151867	745240	20	2.24%	4.97%
QAJ	Merton Sutton and Wandsworth	+	+	124007	626992	20	9.42%	7.40%
QAK	East Surrey	+	+	69484	419940	17	9.53%	7.14%
QAL	West Surrey	+	+	120346	640601	19	4.86%	7.96%
QAM	East Sussex Brighton and Hove	+	+	157156	747183	21	3.78%	6.78%
QAN	West Sussex	-	-	162854	751845	22	22.67%	23.81%
QAP	Barking and Havering	+	+	79653	383888	21	1.21%	1.81%
QAQ	Barnet	-	-	58103	331548	18	12.98%	18.20%
QAR	Brent and Harrow	E2	E2	91982	464447	20	54.57%	41.40%
QAT	Camden and Islington	-	-	78985	367569	21	16.10%	16.38%
QAV	Ealing Hammersmith and Hounslow	E2	E2	130112	671169	19	48.79%	45.94%
QAW	East London and the City	+	+	135008	612425	22	2.17%	2.81%
QAX	North Essex	+	+	172414	897085	19	2.83%	1.31%
QAY	South Essex	+	+	141589	708537	20	1.40%	1.31%
QC1	South Lancashire	+	+	83321	312661	27	2.72%	1.82%
QC2	Liverpool	-	+	144908	461481	31	21.97%	9.08%
QC3	Manchester	+	+	122941	429812	29	2.35%	1.52%
QC4	Morecambe Bay	+	+	81350	310300	26	1.89%	5.43%
QC5	St. Helen's and Knowsley	E2	-	94724	333002	28	37.06%	29.95%
QC6	Salford and Trafford	+	+	119415	446222	27	6.14%	2.05%
QC7	Sefton	-	+	76751	287743	27	21.98%	2.70%
QC8	Stockport	+	+	77343	292808	26	1.01%	4.16%
QC9	West Pennine	-	-	125871	472038	27	22.12%	21.66%
QCC	Northamptonshire	+	+	139331	615796	23	3.23%	1.04%
QCE	Oxfordshire	+	+	110816	616707	18	4.47%	0.50%
QCF	Suffolk	+	+	147575	671095	22	2.19%	2.59%
QCG	Barnsley	E2	E2	61543	228103	27	52.43%	52.49%
QCH	North Derbyshire	-	-	84701	370192	23	11.44%	11.28%
QCJ	Southern Derbyshire	+	+	125781	567457	22	8.75%	9.01%
QCK	Doncaster	E2	E2	73111	290468	25	78.94%	78.34%
QCL	Leicestershire	+	+	221868	928716	24	6.36%	6.68%
QCM	Lincolnshire	-	+	132533	623130	21	10.02%	9.90%
QCN	North Nottinghamshire	+	+	96231	388889	25	8.46%	8.62%
QCP	Nottingham	E1	E1	83529	642698	13	0.94%	1.76%
QCQ	Rotherham	E2	E2	56046	254424	22	84.37%	84.00%
QCR	Sheffield	E2	E2	123860	531141	23	49.33%	51.16%
QCT	Bury and Rochdale	+	+	111522	391007	29	3.40%	2.07%
QCV	North Cheshire	+	+	80575	311908	26	7.31%	7.48%
QCW	South Cheshire	-	+	154685	672372	23	17.70%	1.31%
QCX	East Lancashire	+	+	154892	511233	30	9.73%	9.43%
QCY	North West Lancashire	+	+	137188	466274	29	0.67%	3.01%
QD1	North and Mid Hampshire	+	+	115616	556936	21	5.11%	7.03%
QD2	Portsmouth and South East Hampshire	+	+	130351	544685	24	5.07%	8.31%
QD3	Southampton and South West Hampshire	E2	E2	128043	542337	24	68.87%	73.53%
QD4	Isle of Wight	+	+	28946	126989	23	5.11%	5.29%
QD5	Somerset	+	+	106767	489280	22	3.74%	1.58%
QD6	South and West Devon	+	+	150095	589124	25	2.54%	4.37%
QD7	Wiltshire	+	+	120937	605511	20	2.39%	5.11%
QD8	Avon	+	+	210030	999295	21	2.19%	1.64%
QD9	Birmingham	+	+	226223	1013431	22	6.12%	9.47%
QDA	Wigan and Bolton	+	+	154238	577985	27	1.70%	3.30%
QDC	Wirral	+	+	99556	327145	30	1.36%	2.26%
QDD	Bradford	E2	E2	135574	483285	28	55.48%	53.51%
QDE	County Durham	-	-	145838	607770	24	26.83%	29.24%
QDF	East Riding	E1	E1	35102	574533	6	16.62%	26.23%
QDG	Gateshead and South Tyneside	+	+	101337	353466	29	0.29%	1.34%
QDH	Leeds	+	+	171108	727389	24	7.92%	7.48%
QDJ	Newcastle and North Tyneside	+	+	121790	470071	26	0.37%	1.84%
QDK	North Cumbria	+	+	72712	319255	23	5.55%	7.83%
QDL	South Humber	+	+	68984	308584	22	2.13%	2.54%
QDM	Northumberland	+	+	78641	309642	25	0.61%	1.06%
QDN	Sunderland	+	+	66704	292307	23	0.79%	2.20%
QDP	Tees	E2	E2	154467	556344	28	35.20%	43.08%
QDQ	Wakefield	+	+	75128	318804	24	7.17%	8.76%
QDR	North Yorkshire	-	-	109206	742404	15	21.28%	24.47%
QDT	Calderdale and Kirklees	E2	E2	131157	583774	22	63.24%	62.63%
QDV	Cornwall and Isles of Scilly	E2	E2	119547	490370	24	76.95%	76.41%
QDW	Dorset	+	+	184244	691215	27	2.70%	5.23%
QDX	North and East Devon	+	+	114022	479264	24	2.75%	0.75%
QDY	Gloucestershire	+	+	123750	557257	22	0.95%	0.42%
QEA	Coventry	+	+	74396	304334	24	0.85%	0.50%
QEC	Dudley	+	+	67717	311468	22	0.73%	1.85%
QED	Herefordshire	+	-	37696	167920	22	3.06%	11.27%
QEE	Sandwell	+	+	66985	290521	23	5.41%	6.66%
QEF	Shropshire	+	+	88139	430212	20	4.22%	8.34%
QEG	Solihull	+	+	38206	205649	19	2.69%	3.54%
QEH	North Staffordshire	+	+	109099	469214	23	2.98%	0.57%
QEJ	South Staffordshire	-	-	152177	592066	26	15.40%	16.80%
QEK	Walsall	+	+	61561	261170	24	0.76%	2.36%
QEL	Warwickshire	+	+	109964	506713	22	0.91%	2.09%
QEM	Wolverhampton	+	-	59184	241623	24	2.88%	12.46%
QEN	Worcestershire	+	+	105324	538200	20	0.70%	2.13%
QEP	East and North Hertfordshire	+	+	97211	499598	19	4.82%	4.67%
QEQ	West Hertfordshire	E2	E2	103654	534018	19	39.90%	40.43%
QER	Cambridgeshire	-	-	151040	719767	21	24.91%	23.43%
QET	Norfolk	+	+	191692	790275	24	3.68%	4.87%

Key to Quality Marks
		Procedures Indicators	Admissions Indicators
"+" = GOOD QUALITY MARK		68	68
"-" = MEDIOCRE QUALITY MARK		15	16
"E1" = EXCLUDED - Poor coverage		2	2
"E2" = EXCLUDED - Poor quality		14	13
"E3" = EXCLUDED - Poor coverage and quality		0	0
TOTAL NUMBER OF HAs		99	99

+	HAs with more than 14 units of activity per head of population and less than 10% of relevant FCEs missing / invalid
-	HAs with more than 14 units of activity per head of population and less than 30% of relevant FCEs missing / invalid
E1	Excluded from graphs because of poor coverage (less than 14 units of activity per head of population)
E2	Excluded from graphs because of poor quality data (more than 30% of relevant FCEs missing / invalid)
E3	Excluded from graphs because of poor coverage and poor quality data

HAs with an "E1" Quality Mark
		Procedures Indicators	Admissions Indicators
QCP	Nottingham	Yes	Yes
QDF	East Riding	Yes	Yes

HAs with an "E2" Quality Mark
		Procedures Indicators	Admissions Indicators
QA3	Kensington Chelsea and Westminster	Yes	Yes
QAR	Brent and Harrow	Yes	Yes
QAV	Ealing Hammersmith and Hounslow	Yes	Yes
QC5	St. Helen's and Knowsley	Yes	No
QCG	Barnsley	Yes	Yes
QCK	Doncaster	Yes	Yes
QCQ	Rotherham	Yes	Yes
QCR	Sheffield	Yes	Yes
QD3	Southampton and South West Hampshire	Yes	Yes
QDD	Bradford	Yes	Yes
QDP	Tees	Yes	Yes
QDT	Calderdale and Kirklees	Yes	Yes
QDV	Cornwall and Isles of Scilly	Yes	Yes
QEQ	West Hertfordshire	Yes	Yes

HAs with an "E3" Quality Mark
		Procedures Indicators	Admissions Indicators
None

Data Quality Indicator 1996/97

		Procedures Indicators Quality Mark	Admissions Indicators Quality Mark	Total FCE's	Total Population	Units of activity per 100 head of pop	% of FCEs for Procedures Indicators with any missing / invalid fields	% of FCEs for Admissions Indicators with any missing / invalid fields
QA2	Hillingdon	-	-	49794	251165	20	27.05%	24.17%
QA3	Kensington Chelsea and Westminster	E2	E2	57688	390772	15	50.37%	50.95%
QA4	Enfield and Haringey	+	+	103792	486441	21	2.23%	2.27%
QA5	Redbridge and Waltham Forest	+	+	91266	453316	20	1.41%	1.05%
QA6	Bedfordshire	+	-	100877	556628	18	4.54%	10.90%
QA7	Berkshire	+	+	125632	800180	16	3.45%	2.18%
QA8	Buckinghamshire	+	+	121604	681873	18	2.82%	1.94%
QAA	Bexley and Greenwich	+	+	87546	432933	20	1.93%	2.17%
QAC	Bromley	+	+	61750	297118	21	1.92%	9.78%
QAD	Croydon	+	+	65681	338217	19	2.27%	3.47%
QAE	East Kent	+	+	130204	601059	22	1.69%	0.86%
QAF	West Kent	+	+	181222	973502	19	1.40%	1.17%
QAG	Kingston and Richmond	+	+	62055	334032	19	7.41%	7.38%
QAH	Lambeth Southwark and Lewisham	+	+	155968	745240	21	1.68%	5.21%
QAJ	Merton Sutton and Wandsworth	+	+	135832	626992	22	6.97%	4.96%
QAK	East Surrey	+	+	80206	419940	19	3.38%	2.67%
QAL	West Surrey	+	+	117168	640601	18	2.98%	5.61%
QAM	East Sussex Brighton and Hove	+	+	157223	747183	21	2.34%	6.29%
QAN	West Sussex	-	-	145235	751845	19	22.64%	23.25%
QAP	Barking and Havering	+	+	80297	383888	21	1.49%	1.62%
QAQ	Barnet	E1	E1	41892	331548	13	7.41%	8.47%
QAR	Brent and Harrow	E2	E2	87397	464447	19	62.64%	42.28%
QAT	Camden and Islington	+	+	77230	367569	21	4.06%	5.24%
QAV	Ealing Hammersmith and Hounslow	E2	E2	121607	671169	18	48.11%	37.62%
QAW	East London and the City	+	+	137498	612425	22	1.73%	1.37%
QAX	North Essex	+	+	163080	897085	18	1.92%	1.67%
QAY	South Essex	E2	E2	143695	708537	20	34.80%	34.03%
QC1	South Lancashire	+	+	76413	312661	24	0.83%	1.06%
QC2	Liverpool	-	+	144313	461481	31	11.35%	1.07%
QC3	Manchester	+	+	124360	429812	29	0.49%	0.92%
QC4	Morecambe Bay	+	+	74923	310300	24	1.39%	5.68%
QC5	St. Helen's and Knowsley	+	+	94189	333002	28	6.63%	0.82%
QC6	Salford and Trafford	+	+	119672	446222	27	0.23%	1.78%
QC7	Sefton	-	+	76264	287743	27	23.04%	1.79%
QC8	Stockport	+	+	77218	292808	26	0.82%	2.94%
QC9	West Pennine	+	+	128694	472038	27	0.30%	1.20%
QCC	Northamptonshire	E1	E1	79547	615796	13	5.59%	2.34%
QCE	Oxfordshire	+	+	109683	616707	18	6.16%	0.42%
QCF	Suffolk	E2	-	135460	671095	20	30.46%	28.33%
QCG	Barnsley	+	+	61453	228103	27	3.75%	4.76%
QCH	North Derbyshire	+	+	86442	370192	23	5.48%	6.53%
QCJ	Southern Derbyshire	+	+	123022	567457	22	1.33%	1.69%
QCK	Doncaster	+	+	72804	290468	25	2.52%	3.15%
QCL	Leicestershire	-	E2	213459	928716	23	23.91%	30.93%
QCM	Lincolnshire	+	+	130864	623130	21	1.30%	3.20%
QCN	North Nottinghamshire	+	+	93920	388889	24	1.30%	2.80%
QCP	Nottingham	+	+	145006	642698	23	0.66%	5.39%
QCQ	Rotherham	+	+	55702	254424	22	5.81%	7.59%
QCR	Sheffield	E2	E2	129408	531141	24	45.69%	49.65%
QCT	Bury and Rochdale	+	+	108182	391007	28	2.66%	3.03%
QCV	North Cheshire	+	+	80145	311908	26	1.29%	1.60%
QCW	South Cheshire	-	+	150799	672372	22	22.47%	0.91%
QCX	East Lancashire	+	+	146303	511233	29	3.99%	4.65%
QCY	North West Lancashire	+	+	125836	466274	27	0.51%	2.31%
QD1	North and Mid Hampshire	+	+	109277	556936	20	4.48%	5.84%
QD2	Portsmouth and South East Hampshire	+	+	117253	544685	22	5.99%	8.44%
QD3	Southampton and South West Hampshire	E2	E2	119315	542337	22	74.19%	79.84%
QD4	Isle of Wight	+	+	28177	126989	22	5.60%	5.61%
QD5	Somerset	+	+	108864	489280	22	0.51%	1.82%
QD6	South and West Devon	+	+	139956	589124	24	0.29%	0.40%
QD7	Wiltshire	+	+	129165	605511	21	4.24%	6.69%
QD8	Avon	+	+	213454	999295	21	0.41%	2.42%
QD9	Birmingham	+	+	225920	1013431	22	0.16%	2.45%
QDA	Wigan and Bolton	+	+	151065	577985	26	0.43%	1.97%
QDC	Wirral	+	+	96668	327145	30	0.89%	1.21%
QDD	Bradford	E2	E2	127440	483285	26	93.97%	94.42%
QDE	County Durham	-	-	142510	607770	23	20.74%	22.42%
QDF	East Riding	E1	E1	44723	574533	8	2.02%	28.22%
QDG	Gateshead and South Tyneside	+	+	96642	353466	27	0.59%	2.37%
QDH	Leeds	E2	E2	181280	727389	25	48.96%	48.19%
QDJ	Newcastle and North Tyneside	+	+	122900	470071	26	2.38%	5.16%
QDK	North Cumbria	E2	E2	71602	319255	22	55.23%	54.67%
QDL	South Humber	+	-	66071	308584	21	1.37%	19.49%
QDM	Northumberland	+	+	75270	309642	24	1.07%	2.01%
QDN	Sunderland	+	+	66867	292307	23	0.86%	1.82%
QDP	Tees	+	-	147459	556344	27	3.39%	12.35%
QDQ	Wakefield	-	-	76850	318804	24	10.26%	13.91%
QDR	North Yorkshire	-	-	163197	742404	22	10.68%	12.85%
QDT	Calderdale and Kirklees	E2	E2	138303	583774	24	63.47%	63.61%
QDV	Cornwall and Isles of Scilly	+	+	114484	490370	23	0.29%	0.92%
QDW	Dorset	+	+	177210	691215	26	2.76%	4.06%
QDX	North and East Devon	+	+	118663	479264	25	0.21%	0.27%
QDY	Gloucestershire	+	+	118285	557257	21	0.32%	0.33%
QEA	Coventry	+	+	71019	304334	23	0.16%	0.45%
QEC	Dudley	+	+	68020	311468	22	0.13%	1.42%
QED	Herefordshire	+	+	35866	167920	21	0.29%	5.57%
QEE	Sandwell	+	+	68032	290521	23	0.10%	0.82%
QEF	Shropshire	+	+	87781	430212	20	0.19%	6.78%
QEG	Solihull	+	+	37565	205649	18	0.11%	1.42%
QEH	North Staffordshire	+	+	107544	469214	23	0.39%	0.14%
QEJ	South Staffordshire	+	+	123096	592066	21	0.15%	1.56%
QEK	Walsall	+	+	57580	261170	22	0.08%	1.30%
QEL	Warwickshire	+	+	105779	506713	21	0.52%	2.09%
QEM	Wolverhampton	+	+	57020	241623	24	0.18%	2.00%
QEN	Worcestershire	+	+	109352	538200	20	0.27%	1.30%
QEP	East and North Hertfordshire	+	+	97545	499598	20	2.83%	3.08%
QEQ	West Hertfordshire	E2	E2	93869	534018	18	40.46%	39.39%
QER	Cambridgeshire	-	-	141288	719767	20	20.91%	22.58%
QET	Norfolk	E2	E2	146288	790275	19	45.98%	47.33%

Key to Quality Marks
		Procedures Indicators	Admissions Indicators
"+" = GOOD QUALITY MARK		73	73
"-" = MEDIOCRE QUALITY MARK		10	10
"E1" = EXCLUDED - Poor coverage		3	3
"E2" = EXCLUDED - Poor quality		13	13
"E3" = EXCLUDED - Poor coverage and quality		0	0
TOTAL NUMBER OF HAs		99	99

+	HAs with more than 14 units of activity per head of population and less than 10% of relevant FCEs missing / invalid
-	HAs with more than 14 units of activity per head of population and less than 30% of relevant FCEs missing / invalid
E1	Excluded from graphs because of poor coverage (less than 14 units of activity per head of population)
E2	Excluded from graphs because of poor quality data (more than 30% of relevant FCEs missing / invalid)
E3	Excluded from graphs because of poor coverage and poor quality data

HAs with an "E1" Quality Mark
		Procedures Indicators	Admissions Indicators
QAQ	Barnet	Yes	Yes
QCC	Northamptonshire	Yes	Yes
QDF	East Riding	Yes	Yes

HAs with an "E2" Quality Mark
		Procedures Indicators	Admissions Indicators
QA3	Kensington Chelsea and Westminster	Yes	Yes
QAR	Brent and Harrow	Yes	Yes
QAV	Ealing Hammersmith and Hounslow	Yes	Yes
QAY	South Essex	Yes	Yes
QCF	Suffolk	Yes	No
QCL	Leicestershire	No	Yes
QCR	Sheffield	Yes	Yes
QD3	Southampton and South West Hampshire	Yes	Yes
QDD	Bradford	Yes	Yes
QDH	Leeds	Yes	Yes
QDK	North Cumbria	Yes	Yes
QDT	Calderdale and Kirklees	Yes	Yes
QEQ	West Hertfordshire	Yes	Yes
QET	Norfolk	Yes	Yes

HAs with an "E3" Quality Mark
		Procedures Indicators	Admissions Indicators
None

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NHS Performance Indicators : July 2000Health Authority Data Quality Indicators