Table 1b.

Distribution of patients in various strata for age and gender.

Stratum for age and gender	Total number in the stratum	Distributed to Balloon DCR group	Distributed to End DCR group
Male 10–29 years	12	7	5
Female 10–29 years	17	8	9
Male 30–49 years	13	7	6
Female 30–49 years	24	11	13
Male 50–69 years	8	3	5
Female 50–69 years	21	12	9
Male 70 years or more	2	1	1
Female 70 years or more	1	0	1
Total	98	49	49