Disabling knee pain – another consequence of obesity: Results from a prospective cohort study

BMC Public Health

Table 5 Onset of severe knee pain at three years in adults aged 50 years and over with no knee pain or non-severe knee pain at baseline by body mass index (BMI) category.

BMI category at baseline		Severe knee pain at 3 years	Unadjusted analysis	Adjusted analysis^a
	n	n (%)	Potential cases avoided^b (% of all incident cases)	Potential cases avoided^b (% of all incident cases)
Normal^c	1295	106 (8.2)	-	-
Overweight	1168	123 (10.5)	21 (6.9)	24 (7.8)
Obese	371	77 (20.8)	35 (11.4)	33 (10.8)
Total	2834	306 (10.8)	56 (18.3)	57 (18.6)

^a adjusted for age, gender, deprivation, anxiety, depression, previous knee injury, widespread pain, chronicity of knee pain (3 months or more) at baseline and laterality of knee pain (1 knee or both) at baseline
^b number of cases which could have been avoided by reducing overweight people to normal and obese people to overweight
^c Normal weight category includes individuals who were underweight.

ISSN: 1471-2458