2.7 Additional Analyses

Tables 18 [a] and [b] provide a breakdown [by Diabetes Type respectively] of Age by Duration of Diabetes (where all three data items were available for analysis).

This shows the majority of individuals who were stated to be Type 1 were in the 20-29 decade age range, [23.7%], with 19.8% [of all Type 1 individuals], in the 30-39 age group.

For Type 2, the predominant age decades of individuals were 60-69 [33.0%], thence 70-79 and 50-59 [24.9% & 21.2% respectively].

Table 18[a] - Age by Duration of Diabetes (Type 1 DM)

Age Group	Count and Percentage	< 18 Mths (Duration of Diabetes)	18Mth-5 Yrs (Duration of Diabetes)	6-10 Yrs (Duration of Diabetes)	11-15 Yrs(Duration of Diabetes)	> 16 Yrs (Duration of Diabetes)	Total (Duration of Diabetes)
< 10	n	1	3	3	0	0	7
< 10	%	14.3%	42.9%	42.9%	0.0%	0.0%	0.7%
10 - 19	n	14	37	43	21	6	121
10 - 19	%	11.6%	30.6%	35.5%	17.4%	5.0%	12.0%
20 - 29	n	25	36	57	58	63	239
20 - 29	%	10.5%	15.1%	23.8%	24.3%	26.4%	23.7%
30 - 39	n	11	38	25	24	88	186
30 - 39	%	5.9%	20.4%	13.4%	12.9%	47.3%	18.4%
40 - 49	n	8	9	20	24	110	171
40 - 49	%	4.7%	5.3%	11.7%	14.0%	64.3%	16.9%
50 - 59	n	3	6	12	15	113	149
50 - 59	%	2.0%	4.0%	8.1%	10.1%	75.8%	14.8%
60 - 69	n	7	7	5	11	52	82
60 - 69	%	8.5%	8.5%	6.1%	13.4%	63.4%	8.1%
70 - 79	n	1	4	3	2	29	39
70 - 79	%	2.6%	10.3%	7.7%	5.1%	74.4%	3.9%
80 +	n	1	0	0	0	14	15
80 +	%	6.7%	0.0%	0.0%	0.0%	93.3%	1.5%
Total	n	71	140	168	155	475	1009
Total	%	7.0%	13.9%	16.7%	15.4%	47.1%	100.0%

Table 18[b] - Age by Duration of Diabetes (Type 2 DM)

Age Group	Count and Percentage	< 18 Mths (Duration of Diabetes)	18 Mths-5 Yrs (Duration of Diabetes)	6-10 Yrs (Duration of Diabetes)	11-15 Yrs (Duration of Diabetes)	> 16 Yrs (Duration of Diabetes)	Total (Duration of Diabetes)
< 10	n	0	0	0	0	0	0
< 10	%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%
10 - 19	n	2	3	0	0	0	5
10 - 19	%	40.0%	60.0%	0.0%	0.0%	0.0%	0.2%
20 - 29	n	8	18	6	3	0	35
20 - 29	%	22.9%	51.4%	17.1%	8.6%	0.0%	1.1%
30 - 39	n	24	37	26	8	5	100
30 - 39	%	24.0%	37.0%	26.0%	8.0%	5.0%	3.1%
40 - 49	n	45	73	84	50	38	290
40 - 49	%	15.5%	25.2%	29.0%	17.2%	13.1%	9.0%
50 - 59	n	79	144	176	149	159	707
50 - 59	%	11.2%	20.4%	24.9%	21.1%	22.5%	21.9%
60 - 69	n	86	134	218	237	397	1072
60 - 69	%	8.0%	12.5%	20.3%	22.1%	37.0%	33.3%
70 - 79	n	39	49	127	181	384	780
70 - 79	%	5.0%	6.3%	16.3%	23.2%	49.2%	24.2%
80 +	n	19	17	30	43	126	235
80 +	%	8.1%	7.2%	12.8%	18.3%	53.6%	7.3%
Total	n	302	475	667	671	1109	3224
Total	%	9.4%	14.7%	20.7%	20.8%	34.4%	100.0%

NB: Duration of diabetes was calculated as: [2011 minus stated ‘Year of Diagnosis’].
The resulting integer would be 0 if diagnosed in 2011, and 1 if diagnosed in 2010 [and in fact a maximum of 18 Mths – 1 Jan ’10 diagnosis to 30 Jun ’11 survey]. Duration 18 Mths-5 Years is thus a minimum 18 Mths {Dec ’09 diagnosis to Jun ’11 survey} to 5 years 06-11].

In regards to duration of Type 1, 7.0% were “newly diagnosed” (duration <=18 Months), with 13.5% 18 Months-5 Years duration, and 15.9% 6-10 Years - the remainder being 15.5% 11-15 Years and 48.1% 16-plus Years. For Type 2 there were 9.1% “newly diagnosed”, the remainder relatively equally spread across the diabetes duration groups, apart from the largest group, 34.0% having a diabetes duration of 16 plus Years.