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Table 5 Difference-in-differences models for SABAS scores and abortion knowledge

From: Community-based intervention improves abortion knowledge and reduces abortion stigma among women in Oromia, Ethiopia: a quasi-experimental mixed methods evaluation

Variable

Coefficient

Std. Error

95% Confidence Interval

p-value

Model 1: Outcome = Total SABAS Score

 DID (Treatment*Time)a

−9.33

1.49

−12.25

−6.42

< 0.001

Adjustment Covariates

  Treatment (Intervention = 1)

1.40

1.06

− 0.67

3.48

0.185

  Time (Endline = 1)

10.04

1.77

6.58

13.51

< 0.001

  Any school

−5.04

0.89

−6.78

−3.29

< 0.001

  Any school*Timeb

−4.59

1.26

−7.05

−2.12

< 0.001

  Orthodox Christian

3.99

1.09

1.84

6.14

< 0.001

  Orthodox Christian*Timeb

−2.01

1.48

−4.92

0.89

0.175

  Knowledge of any indications of legal abortion

−3.23

1.02

−5.23

−1.23

0.002

  Knowledge of any indications of legal abortion*Timeb

−3.46

1.32

−6.05

−0.86

0.009

  Attended any safe abortion eventsc

1.53

0.75

0.07

2.99

0.040

Model 2: Outcome = Knowledge of one or more indications of legal abortion

 DID (Treatment*Time)a

0.26

0.06

0.15

0.37

< 0.001

Adjustment Covariates

  Treatment (Intervention = 1)

−0.14

0.04

−0.22

− 0.06

< 0.001

  Time (Endline = 1)

0.32

0.06

0.19

0.44

< 0.001

  Any school

0.15

0.03

0.09

0.21

< 0.001

  Any school*Timec

−0.02

0.05

−0.11

0.07

0.672

  Orthodox Christian

−0.08

0.04

−0.16

0.002

0.056

  Orthodox Christian*Timeb

0.02

0.06

−0.09

0.13

0.764

  Attended any safe abortion eventsc

0.21

0.03

0.15

0.26

< 0.001

  1. aDID is the difference-in-differences variable, an interaction term of treatment group (Boset vs. Fogera) and time (baseline vs. endline); 1 = intervention group at endline
  2. bTime-varying covariates with time-varying effects on the outcome are adjusted for using an interaction term between the covariate and time
  3. cTime-varying covariates with time-invariant effects on the outcome are adjusted for by including the term in the model