Table 3 Fraction of people with diabetes using selected groups of medicines.

	Total	Retinopathy grading						p Value*
		0	1	2	3	4a	4b
Type 1 diabetes
n	656	311	137	161	19	5	32
BP‐reducing drugs	26.2	13.2	30.1	37.9	26.3	80.0	65.6	0
Oral antidiabetics	0	0	0	0	0	0	0
Insulin	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Lipid‐lowering drugs	6.7	3.6	11.0	8.1	0	0	15.6	0.192
Type 2 diabetes
n	328	193	40	71	12	1	2
BP‐reducing drugs	57.6	48.3	61.0	73.2	83.3	100.0	50.0	0
Oral antidiabetics	36.3	40.8	29.3	29.6	33.3	0	0	0.064
Insulin	64.9	53.7	80.5	83.1	83.3	100.0	100.0	0
Lipid‐lowering drugs	27.1	27.4	22.0	32.4	16.7	0	0	0.988

BP, blood pressure.

p Values indicate possible trends across increasing levels.

*Trend across increasing grading (excluding 4b) was tested by Mantel–Haenszel linear‐by‐linear association.