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Table 1 Birthweight (g) by randomised group and smoking status at end of pregnancy (primary outcome)

From: Birth weight differences between those offered financial voucher incentives for verified smoking cessation and control participants enrolled in the Cessation in Pregnancy Incentives Trial (CPIT), employing an intuitive approach and a Complier Average Causal Effects (CACE) analysis

  

Primary outcome

All

  

Smoker

Non-smoker

Randomised group

Control

N = 262

3075 (569)

N = 25

3586 (566)

N = 287

3120 (586)

Incentives

N = 227

3053 (588)

N = 68

3432 (527)

N = 295

3141 (595)

All

N = 489

3065 (577)

N = 93

3473 (539)

N = 582

3130 (590)

  1. Results are presented as number of observations (N) and mean (standard deviation); 25 birth weights were missing, as they were not available from routinely collected data