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. Author manuscript; available in PMC: 2014 Dec 1.
Published in final edited form as: Econ Educ Rev. 2013 Dec;37:10.1016/j.econedurev.2013.09.004. doi: 10.1016/j.econedurev.2013.09.004

Table 3.

Threshold effects of math skills for adult Tsimane’ (≥16 years old; 2008–2009)

Variables Local Market Animals Total wealth Income Consumption BMI Perceived stress Child morbidity Child WHZ
Addition 7.04 (9.42) 37.90* (21.75) 6.11 (40.40) 61.45* (34.24) −2.02 (12.37) 2.85 (2.26) 0.01 (0.01) 0.73 (0.68) −0.08 (0.26) −0.12 (0.10)
Subtraction 14.40 (10.56) 35.64* (20.37) 13.05 (31.86) 32.40 (35.91) 12.07 (10.41) 3.10 (2.73) 0.01 (0.02) −0.41 (0.53) −0.37** (0.18) −0.002 (0.09)
Multiplication 13.07 (8.78) 80.23*** (15.27) 73.18* (43.37) 104.50*** (33.76) 6.24 (8.52) 2.47 (2.02) 0.02* (0.01) −1.13* (0.56) −0.004 (0.14) −0.03 (0.10)
Division 2.70 (5.91) 96.98*** (25.95) 95.51 (61.66) 144.26*** (46.89) 0.19 (16.87) 3.09 (2.74) 0.04*** (0.01) −1.18** (0.51) −0.31* (0.18) 0.08 (0.10)
Spanish 8.74** (3.44) 66.75*** (13.61) −22.65 (22.11) 72.67*** (17.63) 31.12*** (9.54) 4.97** (1.25) 0.01 (0.01) 0.02 (0.42) −0.005 (0.15) 0.14** (0.06)
Schooling −0.03 (0.78) −1.82 (3.17) −0.13 (6.31) 1.98 (5.15) 0.25 (1.24) 0.04 (0.32) −0.002 (0.002) −0.05 (0.10) 0.01 (0.02) −0.02 (0.01)
Distance 2.14*** (0.72) 7.28*** (2.37) −7.13** (3.59) 5.96* (3.24) −3.90*** (1.32) 0.20 (0.16) −0.002 (0.001) −0.01 (0.09) 0.01 (0.01) −0.01 (0.01)
Observations 2,033 2,033 2,033 2,033 2,033 2,031 1,970 2,021 3,005 2,111
R2 0.10 0.16 0.002 0.09 0.01 0.04 0.02 0.07 0.02 0.02

Notes: Same notes as in Table 2. We added dummies for math scores (e.g. addition=1 if math score was 1, addition=0 otherwise). The excluded category includes participants who scored 0 in the math test.