Table 6 Benefits and costs under the basic scenario

   (1) change in consumer surplus of pregnant women in Kaizuka city in 2008

0.020

   (2) change in consumer surplus of pregnant women in Izumisano city in 2008

0.025

   (3) change in consumer surplus of pregnant women in Hannan city in 2008

0.022

   (4)change in consumer surplus of pregnant women in Sennan city in 2008

0.022

   (5) total change in consumer surplus in 2008 (=(1) + (2) + (3) + (4))

0.089

    (6) present value of change in consumer surplus

1.763

   (7) revenue of OBGY department in Izumisano City Hospital in 2008

0.850

   (8) revenue of obstetrics department in Izumisano City Hospital in 2007

0.321

   (9) revenue of obstetrics department in Kaizuka City Hospital in 2007

0.431

   (10) total change in producer surplus in 2008 (=(7) - (8) - (9))

0.098

    (11) present value of change in producer surplus

1.994

    (12) present value of benefits (=(6) + (11))

3.757

Cost items (the unit of the figures is billion JP¥)

   (13) extra investment in equipments in 2008^a

0.227

   (14) extra personnel cost in 2008

0.125

   (15) extra running cost in 2008

0.010

    (16) present value of extra costs

2.748

Benefit-cost (B/C) ratio (=(12)/(16))

1.367