“…All four types of socially vulnerable individuals where this outcome was noted showed a high degree of irregular dentist attendance, involving more than half of the participants evaluated. Specifically, this bad habit affected 75%of the homeless ([95% CI 73–76%]; 2530 participants, two studies) [ 67 , 68 ], 66% of pregnant women ([95%CI48–82]; 5103 participants, eight studies, I 2 = 99%) [ 54 , 83 , 84 , 164 , 165 , 166 , 167 , 168 ], 55% of immigrants ([95% CI 21–87%]; 1351 participants, five studies) [ 51 , 169 , 170 , 171 , 172 ] ( Figure 5 ) and 54% of the elderly ([95% CI 43–65%]; 33,430 participants, 19 studies, I 2 = 99.7%) [ 33 , 36 , 41 , 46 , 47 , 90 , 91 , 96 , 97 , 106 , 110 , 116 , 126 , 132 , 139 , 142 , 173 , 174 , 175 ].…”