19.3. Analysis.

Comparison 19 Implant: levonorgestrel, 6 capsules (216 mg), Outcome 3 Pregnancy by body weight per year.

Pregnancy by body weight per year
Study	Body weight (kg)	Enrollment %	Years 1 to 3 n	Year 4 n	Year 5 n
Sivin 1998b	_	(N = 598)	_	_	_
Sivin 1998b	< 50	18%	0	0	0
Sivin 1998b	50 to 59	43%	0	0	0
Sivin 1998b	60 to 69	28%	0	0	0
Sivin 1998b	≥ 70	11%	0	0	2
Sivin 1998c	_	(N = 501)	_	_	_
Sivin 1998c	< 50	5%	0	0	0
Sivin 1998c	50 to 59	35%	0	0	0
Sivin 1998c	60 to 69	33%	0	0	0
Sivin 1998c	≥ 70	27%	1	0	2