Table 2.

Comparison of cytogenetic analysis of present study with the previous findings

References	Total cases	% Abnormal chromosome	Normal (%)	Numerical anomalies (%)	Structural anomalies (%)	Male karyotype (%)
Rajangam and Nanjappa [5]	620	26.1	73.87	11.5	5.6	9.0
Cortes-Gutierrez et al. [15]	187	41.7	58.3	26.7	4.3	10.7
Kalavathi et al. [6]	852	25.8	74.2	11.7	7.04	7.04
Vijayalakshmi et al. [7]	140	27.8	71.2	14.3	7.1	6.4
Yu et al. [13]	340	47.0	53.00	45.2	1.8	–
Faeza [12]	223	20.6	79.37	14.7	4.9	0.9
Samarakoon et al. [3]	338	34.0	66.0	26.0	0.9	6.5
Mohajertehran et al. [11]	180	24.5	75.5	16.7	3.4	4.4
Geckinli et al. [2]	94	37.00	63.00	12.7	11.7	12.7
Stoyanova et al. [10]	140	32.6	61.4	20.7	7.1	6.4
Present study	3776	31.2	68.8	9.7	10.9	10.6