Association of adiponectin gene polymorphisms with knee osteoarthritis

Table 3 Based on radiographic severity of osteoarthritis, genotype distribution of adiponectin gene +45T/G polymorphism in osteoarthritis patients

OA severity	Genotype			P	aP
KL system	TT	TG	GG
Grade 2	27	30	8
Grade 3	29	29	8	NS
Grade 4	28	34	9	NS	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.