Australian National Diabetes Information Audit & Benchmarking (ANDIAB) 2011 Final Report

2.3 Categorical Data Summaries

Several tables on medical statistics of individuals

Page last updated: December 2011

Table 5 gives a breakdown of overall mean categorical data (SD) for BMI, Blood Pressure,
Lipids and Blood Glucose Control. Appendix 3 shows Frequency Tables for n= and range data.

Table 5 - Overall Mean Data

* (mmol/L)
All - n = 4629
Adult - n = 4629
Paediatric - n = 0
BMI [kg/m]
31.3 7.5
BP (mm Hg)
130 18 / 74 10
Cholesterol *
4.3 1.1
HDL Cholesterol *
1.2 0.4
Triglyceride *
1.8 1.5
LDL Cholesterol *
2.2 0.9
LDL_CALC *
2.2 0.9
LDL_ALL *
2.2 0.9
HbA1c (%)
8.1 1.7

[LDL is as Reported or Calculated [CALC] from available lipids if no LDL Reported. ALL uses CALC if LDL not Reported]


Tables [6-8] detail Risk Factors, Complications and Current Status Data. As noted on Page 10, these data are reported as the percent ‘Yes’ of the total patient group including urinary albumin/protein [Table 8]. As stated however, the data on lipids & obesity [Table 6] represent the percent of those where the test/procedure was done (marked by a double asterisk**)[eg 3.5% of those with a cholesterol result had a level >6.5, NOT 3.5% of ALL patients]. Top of page

Table 6 collates data relating to Risk Factors [n= represents All Sites data, others are % only].

Table 6 - Risk Factor Data

Risk Factors
[All n]
All % n
n = 4629
Adult %
n = 4629
Paediatric %
n = 0
Current Smokers
457
9.9%
Past Smokers
1088
23.5%
Never Smoked
1830
39.5%
On Antihypertensive Therapy
2637
57.0%
Hypercholesterolaemia **>6.5
124 / 3526
3.5%
5.5-6.5
317 / 3526
9.0%
5.0-6.5
664 / 3526
18.8%
Hypertriglyceridaemia **>4.0
187 / 3487
5.4%
2.0-4.0
877 / 3487
25.2%
Reduced HDL Cholesterol **<1.0
846 / 3067
27.6%
Raised LDL **>2.5
994 / 2884
34.5%
On AntiLipid Therapy
2786
60.2%
Over Wt / Obese Type 2 **>27 kg/m
2353 / 2945
79.9%

[** These figures represent the % of the total who had the test/procedure - ie excluding the missing values]

Top of pageTable 7[a] collates the data relating to Complications/Events in the last 12 months
[n= represents All Sites data, others are % only].

Table 7[a] – Complications/Events in the Past 12 Months


[All n =]
All %
n = 4629
Adult %
n = 4629
Paediatric %
n = 0
Severe Hypoglycaemia
220
4.8%
Myocardial Infarct
185
4.0%
CABG/ Angioplasty/ Stent
125
2.7%
Cerebral Stoke
74
1.6%
End Stage Renal Disease [ESRD]*
18
0.4%
Lower Limb Amputation
33
0.7%
New Blindness
40
0.9%
Erectile Dysfunction [%males] *
52
2.1%
*This represents those with ESRD or Erectile Dysfunction [in last 12 months] = Yes and ESRD or Erectile Dysfunction {ED} [developing Prior to the last 12 months] = NO-{ie those likely to have developed it recently, not developed it previously & still have it -[Yes last 12 months AND Yes Prior]. In this regard we excluded those with Yes in the last 12 months and Missing (Prior) - ie ESRD=5 and ED=13. If these are included the respective Adult % would be ESRD 0.5% and ED 2.6%}.Top of page

Table 7[b] collates the data relating to Complications/Events prior to the last 12 months,
[n= represents All Sites data, others are % only]. {Data NOT collected on Paediatric Forms-N/A}.Top of page

Table 7[b] – Complications/Events prior to the Past 12 Months

Complications / Events
[All n]
All %
n = 4629
Adult %
n = 4629
Paediatric %
n = 0
Myocardial Infarct
407
8.8%
CABG/ Angioplasty/ Stent
440
9.5%
Cerebral Stoke
196
4.2%
End Stage Renal Disease [ESRD]
110
2.4%
Lower Limb Amputation
97
2.1%
New Blindness
47
1.0%
Erectile Dysfunction [%males]
560
22.6%
Top of page
Table 7[c] collates data relating to the percent of individuals with any complications/event [i.e. occurring during, or prior to the last 12 months, or Both, counted once only]
[n= represents All Sites data, others are % only].

Table 7[c] - Any Complication/Event[during &/or prior to the Past 12 Months]

Complications / Events
[All n]
All %
n = 4629
Adult %
n = 4629
Paediatric %
n = 0
Myocardial Infarct
555
12.0%
CABG/ Angioplasty/ Stent
537
11.6%
Cerebral Stoke
238
5.1%
End Syage Renal Disease [ESRD]
125
2.7%
Lower Limb Amputation
107
2.3%
New Blindness
59
1.3%
Erectile Dysfunction [%males]
625
25.2%
Top of page
Table 8 collates the data relating to Current Data in the last 12 months,
[n=represents All Sites data, others % only].

Table 8 – Current Data [and Previous Foot Ulcer History]

Complications
[All n]
All %
n = 4629
Adult %
n = 4629
Paediatric %
n = 0
Current Foot Ulcer
98
2.1%
Active Foot Lesion
116
2.5%
Previous Foot Ulcer History
256
5.5%
Peripheral Vascular Disease
540
11.7%
Peripheral Neuropathy
1013
21.9%
Microalbuminuria #
608
13.1%
Macroalbuminuria #
277
6.0%
Proteinuria > 300 mg/24hr #
24
0.5%

[# These figures represent the % or the Total Patient Group
(NB This was mislabeled in previous ANDIAB Reports as the % of the total where the test/procedure was done (ie excludes missing) - See Table 16 Section 2.4.7 for these data].

Top of pageWhilst there are some differences, the majority of these data are similar to findings in 2009 [and other previous collections] (Appendix 7), indicating these data are providing a relatively consistent picture of the clinical status of individuals attending specialist diabetes services.

Major findings compared to 2004, 2006 & 2009 data were for ‘Any’ Myocardial Infarction (Prior to OR in the last 12 months) [9.0% in 2004, 12.8% in 2006, 10.4% in 2009], and CABG [10.8% in 2004, 12.6% in 2006, 9.8 in 2009]. In 2011 the respective percentages were similar to 2009-12.0% and 11.6% respectively. Also, there were similar reported levels of Antihypertensive use – 57.0% [versus 56.4% in 2004, 55.4% in 2006 and 52.2% in 2009] but increasing Lipid Therapy use 60.2% [versus 41.0% in 2004, 52.0% in 2006 and 52.9% in 2009], compared to previously, suggesting sustained increased use. These findings are interpreted in the face of significant Missing Data for Myocardial Infarction and CABG in 2011 (12.7-26.6% versus 5.8-9.9% in 2006) [see Note [1] Discussion & Executive Summary].

Selected data from the above Tables show [in patients attending specialist diabetes services]:

Table 6
  • 9.9% [10.3% Adult Forms in 2009] are current smokers,
  • 57.0% [52.2% Adult Forms in 2009] are on antihypertensive therapy, and
  • 79.9% [77.2% in 2009] Type 2 individuals overweight or obese [BMI > 27kg/m2].
Table 7 [a][b][c]
  • 4.8% [3.2% Adult Forms in 2009] had a severe hypoglycaemic episode, and with regards to complication/event fields (prior to the last 12mths),
  • 22.6% [13.4% Adult Forms in 2009] of males have Erectile Dysfunction, and
  • 9.5% [7.7% Adult Forms in 2009] had CABG/Angioplasty/Coronary Stent.
Table 8
  • 11.7% [9.8% Adult Forms in 2009] have peripheral vascular disease, and
  • 21.9% [18.6% Adult Forms in 2009] have peripheral neuropathy.Top of page
In regards to the data in Tables 7 & 8, these data items are only sought from patients ≥ 19 years old [Adult Forms], (but there were no Paediatric/Adolescent Forms) – some younger individuals were reported on Adult Forms. Note however that these are reported as the % of the total [Adult] patient group & not the % of those where a Yes / No answer was obtained.
The relevant percentages for a selection of these are shown below in Table 7b[1]:

Table 7b[1] Complications/Events prior to the Past 12 Months [Adult Forms]

Yes
No
Missing
n =
%
%
n =
%
n =
%
Myocardial Infarct
407
8.8%
12.0%
2993
64.7%
1229
26.6%
CABG/ Angioplasty/ Stent
440
9.5%
10.9%
3603
77.8%
586
12.7%
Cerebral Stoke
196
4.2%
5.8%
3195
69.0%
1238
26.7%
End Stage Renal Disease [ESRD] *
110
2.4%
3.3%
3242
70.0%
1277
27.6%
Lower Limb Amputation
97
2.1%
2.6%
3693
79.8%
839
18.1%
New Blindness
47
1.0%
1.4%
3309
71.5%
1273
27.5%
Erectile Dysfunction [%males] *
560
22.6%
31.3%
1230
49.7%
686
27.7%
Table 7b[1] shows in italics, the higher % Yes values that would be obtained if presented as the % of the Yes/No response group only, and also shows significant NO % values that are of relevance [see Discussion page 42]. As in previous years, for Paper Form data, ‘Missing’, represents individuals where the item is unavailable or has not been collected.

Note that in 2011, whilst these data are presented as the % of all Adult Data, n=4629 [hence the n= values above], this analysis is actually only relevant for Paper Form completion, where Yes and No data are recorded. The 7 sites that provided data on disk from in-house databases generally only store data on those individuals where an event has occurred, and this has contributed to the high ‘Missing’ percentages for most of these items.

Top of page
Table 7b[2] presents the same analysis for data only from Paper Forms Adult Data sites, [n=3366] - more comparable to the Table 7b[1] analysis from previous ANDIAB collections.

Table 7b[2] Complications/Events prior to the Past 12 Months [Adult Paper Forms]

Yes
No
Missing
n =
%
%
n =
%
n =
%
Myocardial Infarct
342
10.3%
10.9%
2810
84.4%
177
5.3%
CABG/ Angioplasty/ Stent
349
10.5%
11.0%
2828
85.0%
152
4.6%
Cerebral Stoke
164
4.9%
5.2%
3000
90.1%
165
5.0%
End Stage Renal Disease [ESRD] *
103
3.1%
3.3%
3038
91.3%
188
5.6%
Lower Limb Amputation
64
1.9%
2.0%
3094
92.9%
171
5.1%
New Blindness
46
1.4%
1.5%
3106
93.3%
177
5.3%
Erectile Dysfunction [%males] *
458
25.8%
29.9%
1073
60.6%
241
13.6%

Note in italics, the higher % Yes values obtained if presented as the % of the Yes/No response group only.

Top of page

Table 7c[2] presents the same analysis again – here for data only from Paper Forms Adult Data sites,[n=3329], for any Complication/Event [during &/or prior to the Past 12 Months]

Table 7c[2] Any Complication/Event during &/or prior to Past 12Mths [Adult Paper Forms]

Yes
No
Missing
n =
%
%
n =
%
n =
%
Myocardial Infarct
410
12.3%
12.6%
2853
85.7%
66
2.0%
CABG/ Angioplasty/ Stent
441
13.2%
13.5%
2829
85.0%
59
1.8%
Cerebral Stoke
206
6.2%
6.3%
3064
92.0%
59
1.8%
End Stage Renal Disease [ESRD] *
128
3.8%
3.9%
3126
93.9%
75
2.3%
Lower Limb Amputation
83
2.5%
2.5%
3187
95.7%
59
1.8%
New Blindness
57
1.7%
1.7%
3203
96.2%
69
2.1%
Erectile Dysfunction [%males] *
521
29.4%
32.9%
1064
60.0%
187
10.6%

Note in italics, the higher % Yes values obtained if presented as the % of the Yes/No response group only.

NB – There are no equivalent analyses for Table 7a - and there is no Table 7c[1]Top of page

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