Table 2.

Distribution of clinical feature categories and Chi-square test results

Feature	Category	Proportion (%)	χ² value	p-value
ABI Result	0	88.58	343.802	< 0.001
	1	11.42
Dorsalis Pedis Pulse	1	93.40	325.977	< 0.001
	2	2.82
	3	1.47
	4	2.04
	5	0.28
LOPS	0	82.39	30.458	< 0.001
	1	17.61
Stroke	0	81.57	51.989	< 0.001
	1	18.43
Lower Limb Discomfort	0	85.50	50.233	< 0.001
	1	14.50
Pre-retirement Occupation	0	26.34	45.265	< 0.001
	1	73.66
Types of Hypoglycemic Drugs	1	80.81	37.729	< 0.001
	2	8.74
	3	10.45
Current Residential Region	1	62.15	21.638	< 0.001
	2	37.85
Foot Washing Frequency	1	0.36	41.214	< 0.001
	2	5.08
	3	94.09
	4	0.47

Notes: ABI Result: 0: Normal; 1: Abnormal, indicating possible peripheral arterial disease. Dorsalis Pedis Pulse: 1: Normal pulse; 2–5: Gradual weakening of pulse from mildly to undetectable. LOPS: 0: No loss of sensation; 1: Loss of protective sensation. Stroke: 0: No history of stroke; 1: History of stroke. Lower Limb Discomfort: 0: No discomfort; 1: Discomfort present. Pre-retirement Occupation: 0: Low-risk occupation; 1: High-risk occupation. Types of Hypoglycemic Drugs: 1: Insulin; 2: Oral hypoglycemics; 3: Other drugs. Current Residential Region: 1: Urban; 2: Rural. Foot Washing Frequency: 1: Never; 2: Occasionally; 3: Frequently; 4: Daily