Table 4.

Tribe-wise phenotype distribution and allele frequency of HbS and α-thalassaemia among the unrelated 13 PVTGs of Odisha

PVTG Tribe	AA	AS	SS	HbS	χ2	αα/αα	αα/–α	–α/–α	Hbα	χ2
Juang	64	2	0	0.015	0.0156	ND	ND	ND
Kutia Kondho	96	1	0	0.005	0.0026	ND	ND	ND
Paudi Bhuyan	202	6	1	0.019	11.57*	205	6	0	0.0142	0.0439
Dongoria Kondho	115	2	0	0.009	0.008	115	2	0	0.0085	0.0087
Langia Saora	117	10	0	0.039	0.213	120	7	0	0.0276	0.102
Didayi	67	6	0	0.041	0.134	70	3	0	0.0205	0.0321
Saora	139	13	0	0.042	0.303	146	5	1	0.023	10.989*

AA normal individual; AS sickle cell heterozygote; SS sickle cell homozygote; HbS sickle cell allele; χ² chi square value; αα/αα normal α gene; αα/–α α gene single gene deletion; -α/–α α double gene deletion; Hbα allele frequency of α gene deletion; ND not detected

^*Statistically significant (p < 0.05)