Study ID | Country | Currency | Experiment | SD | Control | SD |
---|---|---|---|---|---|---|
Kiyama, T 2003 | Japan | US$ | $14013 | $2634 | $18020 | $7332 |
Kim, MH 2002 | USA* | US$ | $879 | $394 | $1706 | $1512 |
Kollef, HM 2000 | USA* | US$ | $922 | $1614 | $1120 | $1430 |
Grines, CL 1998 | USA* | US$ | $11430 | $6257 | $13733 | $7249 |
Roberts, RR 1997 | USA* | US$ | $1877 | $1243 | $2574 | $999 |
Gomez, MA 1996 | USA* | US$ | $1535 | $1985 | $6768 | $17359 |