﻿ 歐美研究季刊第47卷第3期  Decomposing Youth Poverty in 22 Countries

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is the proportion of young adults living in household type

i

in

Taiwan, and

P

i

is the net disposable income poverty rate for young

i

in Taiwan.

To test the BTST income poverty and welfare effectiveness, I

use some of the equations provided by Heuveline and Weinshenker

(2008). The rewritten equation is a function of three vector

factors:

P =

Σ

(

Hi * Mi * [Pi/Mi])

(2)

where

M

i

is the BTST income poverty rate for young adults in

household type

i

in Taiwan and

P

i

/M

i

is the ratio of the net

disposable income poverty rate to the BTST poverty rate for young

i

in Taiwan (i.e., welfare effectiveness). I

use

W

i

to represent

P

i

/M

i

.

Therefore, the equation is rewritten:

P =

Σ

(Hi * Mi * Wi)

(3)

I include 21 countries in addition to Taiwan. For these 21

countries, the same terms are presented in lowercase letters,

producing the following equation:

p =

Σ

(hi * mi * wi)

(4)

I perform decomposition analyses to determine the

contributions of living arrangements, welfare effectiveness, and

BTST income poverty to the difference in poverty rates between

Taiwan and each of other selected countries. The decomposition

equations are:

p-P =

α

-effect +

β

-effect +

γ

-effect

(5)

α

-effect = Q

(

h

i

)

– Q

(

H

i

)

(6)

β

-effect = Q

(

m

i

)

– Q

(

M

i

)

(7)

γ

-effect = Q

(

w

i

)

– Q

(

W

i

)

(8)

More detailed discussion on the analytic method and equations are