Table 6.

Distribution of Hb concentration in all cases of β-thalassemia trait

Hb (g/dl)	Mumbai						Delhi
	Male			Female			Male			Female
	No.	%	Cum%	No.	%	Cum%	No.	%	Cum%	No.	%	Cum%
<8.0	0	0	0	3	3.9	3.9	1	0.6	0.6	3	2.4	2.4
8.0–8.9	0	0	0	4	5.3	9.2	1	0.6	1.2	1	0.8	3.2
9.0–9.9	11	14.5	14.5	11	14.5	23.7	7	4.1	5.3	7	5.6	8.8
10.0–10.9	23	30.3	44.8	31	40.8	64.5	21	12.3	17.6	20	16.0	24.8
11.0–11.9	22	28.9	73.7	16	21.1	85.6	29	16.9	34.6	42	33.6	58.4
12.0–12.9	17	22.4	96.1	9	11.0	97.4	48	28.1	62.7	29	23.2	81.6
13.0–13.9	03	3.9	100	2	2.6	100	32	18.7	81.3	19	15.2	96.8
>14.0	0	0	0	0	0	0	32	18.7	95.3	4	3.2	100
Total	76			76			171			125