Table 11: Sample correlation coefficient matrix.

H 2 O ruralEthnic H 2 O UrbanSkilBirthsPrenatal

H 2 O rural1
Ethnic −0.408 1
𝟑 . 𝟐 𝟖 𝟎
H 2 O urban 0.683 −0.209 1
𝟔 . 𝟖 𝟕 𝟖 −1.571
SkilBirths 0.587 −0.309 0.545 1
𝟓 . 𝟑 𝟑 𝟎 𝟐 . 𝟑 𝟖 𝟖 𝟒 . 𝟕 𝟕 𝟔
Prenatal 0.456 −0.134 0.452 0.694 1
𝟑 . 𝟕 𝟔 𝟒 −0.991 𝟑 . 𝟕 𝟐 𝟔 𝟕 . 𝟎 𝟕 𝟖

Note: bold 𝑡 -statistics imply statistical significance at the 5 percent or lower level.