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. 2022 Oct 11;12(10):e065351. doi: 10.1136/bmjopen-2022-065351

Table 5.

The effect of obstetric ultrasound on maternal and child service and health outcomes

Outcome variable Estimates SE t P>t
At least one ANC Before: diff (T-C) 2.80 8.31 0.34 0.74
After: diff (T-C) 26.13 8.31 3.14 0.00**
Difference-in-differences 23.33 11.76 1.98 0.05*
Four or more ANC Before: diff (T-C) 6.86 1.61 4.28 0.00**
After: diff (T-C) 11.61 1.61 7.24 0.00**
Difference-in-differences 4.75 2.27 2.09 0.04*
Delivery Before: diff (T-C) 12.28 1.64 7.48 0.00**
After: diff (T-C) 15.73 1.64 9.58 0.00**
Difference-in-differences 3.45 2.32 1.49 0.14
Postnatal care Before: diff (T-C) 9.32 1.77 5.26 0.00**
After: diff (T-C) 15.94 1.77 8.99 0.00**
Difference-in-differences 6.62 2.51 2.64 0.01**
Perinatal death Before: diff (T-C) 0.10 0.07 1.37 0.17
After: diff (T-C) −0.09 0.02 3.55 0.00**
Difference-in-differences −0.18 0.08 2.45 0.01*

Means and SEs are estimated by linear regression.

**P<0.01; *p<0.05.

T - Treatment; C - Control

ANC, antenatal care.