Association of adiponectin gene polymorphisms with knee osteoarthritis

Table 4 Based on radiographic severity of osteoarthritis, genotype distribution of adiponectin gene +276G/T polymorphism in osteoarthritis patients

OA severity	Genotype			P	aP
KL system	GG	GT	TT
Grade 2	20	29	5
Grade 3	41	22	8	0.037
Grade 4	45	25	7	0.046	NS

P value for difference in distribution of genotype between grade 2 and grade 3 or grade 4.

^aP value for genotype distribution between grade 3 and grade 4. OA: Osteoarthritis; KL: Kellgren-Lawrence; NS: Not significant.