Table 2.

Adolescent fertility rates (per 1000 women 15–19 years), relative difference, absolute change, adjusted change and difference in differences in the SIRIAN programme intervention and comparison neighbourhoods in the pre-intervention (2005–2010) and post-intervention periods (2011–16)

Neighbourhood group	AFRa Pre 2005–10	AFRa Post 2011–16	Relative differenceb	Absolute changec AFRa (95%CI)	p value	Difference in differencesd AFRa (95%CI)	p value	Adjusted changec AFRae (95%CI)	p value	Difference in differencesd AFRae (95%CI)	p value
Intervention	27.90	19.34	−30.7	−8.56 (−13.22 to − 3.80)	< 0.001	−12.84 (− 20.67 to − 5.01)	< 0.01	− 12.30 (− 12.45 to − 12.21)	< 0.001	− 10.97 (− 13.91 to − 8.03)	< 0.001
Comparison	21.84	26.17	19.8	4.33 (−1.93 to 10.59)	0.175			1.91 (−2.25 to 6.07)	0.368

^aAFR Adolescent fertility rate (per 1000 women 15–19 years)

^bRelative difference: (AFR Pre-AFR post/AFR Pre)*100

^cβ_I [Intervention]: Intervention and comparison groups

^dβ_T*I [Time*Intervention]: interaction between period and intervention

^eAdjusted by annual neighbourhood’s immigrant population per group