Impact of obesity and metabolic health status in the development of non-alcoholic fatty liver disease (NAFLD): A United Kingdom population-based cohort study using the health improvement network (THIN)

Table 2 Incidence rates of NAFLD by each body size phenotype with and without metabolic abnormalities

Body size phenotype	Sample size	Incident Cases	Person-years	Incidence rate (per 1000 person-years)
Underweight, 0 metabolic abnormalities	94,189	23	418,897.5	0.05
Underweight, 1 metabolic abnormality	15,895	7	65,583.1	0.11
Normal weight, 0 metabolic abnormalities	1,367,321	882	7,137,510	0.12
Normal weight, 1 metabolic abnormality	223,270	377	1,287,137	0.29
Normal weight, ≥ 2 metabolic abnormalities	116,341	219	658,987.8	0.33
Overweight, 0 metabolic abnormalities	852,223	2112	4,926,580	0.43
Overweight, 1 metabolic abnormality	307,553	1437	1,885,388	0.76
Overweight, ≥ 2 metabolic abnormalities	218,120	1158	1,350,602	0.86
Obese, 0 metabolic abnormalities	466,571	2506	2,727,789	0.92
Obese, 1 metabolic abnormality	232,795	1909	1,412,798	1.35
Obese, ≥ 2 metabolic abnormalities	226,771	2237	1,382,909	1.62

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