Obesity and increased burden of hip and knee joint disease in Australia: Results from a national survey

Table 4 Impact of overweight and obesity

Outcome	n	Underweight or normal weight	n	Overweight	n	Obese	p
Hip arthritis
WOMAC pain	28	23.1 (13.8-32.4)	18	40.8 (29.4-52.2)	25	44.3 (34.3-54.4)	0.01
WOMAC stiffness	28	31.7 (22.3-41.1)	18	43.9 (32.3-55.5)	26	50.4 (40.4-60.3)	0.03
WOMAC function	27	23.8 (14.1-33.4)	18	43.8 (32.1-55.5)	25	45.5 (35.2-55.7)	0.01
AQoL	28	0.66 (0.55-0.77)	18	0.48 (0.34-0.62)	25	0.43 (0.31-0.55)	0.02
MAPT	26	0.0 (0.0-7.5)	18	8.1 (0.0-38.6)	25	14.1 (2.3-55.7)	0.01
Hip osteoarthritis
WOMAC pain	18	24.2 (11.9-36.5)	14	34.0 (19.8-48.2)	15	50.4 (36.6-64.2)	0.03
WOMAC stiffness	18	34.7 (23.4-46.1)	14	41.6 (28.5-54.6)	16	53.5 (41.2-65.8)	0.09
WOMAC function	18	27.7 (15.4-40.0)	14	39.2 (25.0-53.4)	15	52.7 (38.9-66.6)	0.03
AQoL	18	0.60 (0.47-0.73)	14	0.56 (0.41-0.71)	15	0.32 (0.18-0.47)	0.02
MAPT	16	2.2 (0.0-17.4)	14	3.8 (1.9-27.8)	15	39.7 (9.6-58.6)	0.01
Knee arthritis
WOMAC pain	34	24.2 (16.1-32.3)	48	25.9 (19.1-32.6)	65	34.0 (28.2-39.8)	0.09
WOMAC stiffness	34	25.6 (17.2-34.0)	49	30.1 (23.1-37.0)	66	40.6 (34.6-46.7)	0.01
WOMAC function	33	20.7 (12.7-28.7)	48	26.6 (20.0-33.2)	65	35.9 (30.2-41.6)	0.01
AQoL	35	0.68 (0.59-0.77)	49	0.64 (0.57-0.72)	65	0.59 (0.52-0.65)	0.24
MAPT	34	0.0 (0.0-5.3)	44	0.0 (0.0-9.4)	58	6.1 (0.0-23.7)	0.01
Knee osteoarthritis
WOMAC pain	15	23.4 (10.9-35.8)	26	24.0 (14.6-33.4)	47	40.1 (33.0-47.1)	0.01
WOMAC stiffness	15	24.0 (11.3-36.6)	27	29.2 (19.8-38.5)	48	44.3 (37.3-51.4)	0.01
WOMAC function	14	20.1 (7.6-32.6)	27	24.0 (15.1-33.0)	47	40.6 (33.7-47.4)	<0.01
AQoL	15	0.65 (0.52-0.79)	27	0.63 (0.53-0.73)	46	0.53 (0.46-0.61)	0.20
MAPT	15	2.5 (0.0-6.6)	26	2.5 (0.0-7.2)	43	12.9 (0.0-39.9)	0.01

WOMAC and AQoL data presented as adjusted mean (95%CI); p-values from ANCOVA with adjustment for age and sex.
MAPT data presented as median (interquartile range); p-values from Kruskal-Wallis test.
Higher WOMAC score indicates higher pain, greater stiffness or worse function; higher MAPT score indicates greater disease severity; lower AQoL score indicates lower HRQoL.

ISSN: 1471-2474