Skip to main content
. 2022 Nov 11;12:58. doi: 10.1186/s13561-022-00403-w

Table 4.

Paired t-test

2013 2015 Mean diff t
OOP
 Total 201.55 ± 242.82 206.12 ± 266.52 4.57 0.55
 Treatment 234.09 ± 259.05 232.84 ± 280.25 −1.25 − 0.12
 Control 100.04 ± 141.47 122.74 ± 196.36 22.70 2.03*
Household income
 Total 3071.16 ± 3142.24 3052.22 ± 2864.47 − 18.94 − 0.38
 Treatment 3136.96 ± 2789.89 3185.58 ± 3028.96 48.62 0.83
 Control 2865.88 ± 4047.00 2636.15 ± 2228.93 − 229.73 −1.29

Values are presented as mean ± standard deviation, and the unit is 10,000 Won (Korean currency)

* p < .05 ** p < .01 *** p < .001