Table 8 Parameter estimates of the ψ’s and δ’s of the segmented regression models by courses

CU male

ψ_m,1

25.27 (2.32)

36.10 (2.53)

25.82 (3.12)

CU female

ψ_f,1

18.12 (2.36)

30.97 (3.06)

21.10 (2.57)

ψ_f,2

38.10 (3.08)

50.81 (2.52)

-

CU male

δ_m,1

0.11* (0.02)

0.11* (0.02)

0.11* (0.02)

CU female

δ_f,1

0.08* (0.02)

0.07* (0.02)

0.15* (0.03)

δ_f,2

0.05* (0.02)

0.11* (0.05)

-

Variable

Parameter

Comp

Eng

Math

CU male

ψ_m,1

21.35 (2.70)

15.45 (0.85)

19.10 (3.99)

CU female

ψ_f,1

3.98 (1.24)

18.10 (1.36)

15.07 (2.23)

ψ_f,2

-

-

43.10 (4.17)

CU male

δ_m,1

0.11* (0.02)

0.13* (0.01)

0.18* (0.05)

CU female

δ_f,1

0.87* (0.39)

0.11* (0.01)

0.25* (0.05)

δ_f,2

-

-

0.10* (0.05)

Variable

Parameter

Nat

Phy

Stat

CU male

ψ_m,1

35.09 (3.58)

18.10 (3.00)

13.89 (5.73)

CU female

ψ_f,1

27.12 (2.82)

15.25 (2.90)

11.92 (5.26)

ψ_f,2

-

49.10 (3.61)

52.10 (2.54)

CU male

δ_m,1

0.09* (0.02)

0.16* (0.04)

0.23 (0.14)

CU female

δ_f,1

0.10* (0.02)

0.21* (0.06)

0.25 (0.16)

δ_f,2

-

0.16 (0.10)

0.39 (0.31)