“…In general, the 32 (21.3%) studies that present an analysis of PCV13 alone tend to take a more economically focused approach than the other included studies. Twenty-seven (84.4%) of these PCV13-only studies account for healthcare cost savings [ 55 , 63 , 64 , 80 , 82 , 87 , 91 , 98 , 110 , 117 , 123 , 127 , 128 , 130 – 132 , 150 , 151 , 153 , 156 – 158 , 168 , 173 , 178 , 184 , 194 ], compared with 79 (52.7%) of all included studies. Similarly, seven of these studies (21.9%) account for outcome-related productivity gains [ 81 , 87 , 98 , 117 , 127 , 132 , 157 ], which represents double the share of all included studies (10.7%).…”