Table 1.

Sample size calculation using associated factors.

No.	Associated factors	Assumption	Number
1	BMI	OR = 1.38 [29], % = 32%, p=80, R = 1	528
2	Body swelling	OR = 3.01 [29], % = 32%, p=80, R = 1	122
3	Uncontrolled BP	OR = 2.92 [29], % = 25, p=80, R = 1	284