. 2020 Apr 29;15(4):e0232350. doi: 10.1371/journal.pone.0232350

Table 3. Correlation matrix for the different formulations of the CCI in 47 countries.

	Original CCI	Revised CCI	Revised CCI + early BF initiation	Revised CCI + early BF initiation + post-natal care for babies	Revised CCI + early BF initiation + tetanus vaccine
Original CCI	1
Original CCI
Revised CCI	0.97	1
Revised CCI
Revised CCI + early BF initiation	0.93	0.97	1
Revised CCI + early BF initiation
Revised CCI + early BF initiation + post-natal care for babies	0.94	0.97	0.96	1

Revised CCI + early BF initiation + tetanus vaccine	0.94	0.98	0.98	0.97	1
Revised CCI + early BF initiation + tetanus vaccine
Revised CCI + early BF initiation + tetanus vaccine + post-natal care for babies	0.95	0.98	0.96	0.99	0.99

CCI = composite coverage index; BF = breastfeeding; all correlations with P<0.001.