Timely receipt of immunisation—individually and collectively by study group*†
Immunisation n (%) Control (n=300) Intervention (n=300) RR (95% CI) P value
Penta-1 at 6 weeks 250 (83) 257 (86) 1.03 (0.96 to 1.10) 0.43
Penta-2 at 10 weeks 252 (84) 256 (85) 1.02 (0.95 to 1.09) 0.65
Measles at 9 months 194 (65) 220 (73) 1.13 (1.02 to 1.26) 0.02
All immunisations 140 (47) 171 (57) 1.22 (1.04 to 1.43) 0.01
*Modified intention-to-treat analysis. Includes all subjects regardless of where immunisation was received or how it was audited.
†Timeliness defined as receiving vaccinations within 1 week of their due date.