“…Not all these factors have been studied, but our search did identify some studies showing better BP control among certain subgroups of patients (Table 5 ). Nonmodifiable factors that influenced BP control included sex/gender [ 137 , 139 – 141 , 145 , 146 , 149 , 150 , 153 , 158 ], ethnicity [ 137 , 144 , 145 , 154 ], age [ 137 , 141 , 142 , 144 , 149 , 154 , 158 ], family history [ 154 ], time since diagnosis [ 139 ] and the presence of cardiovascular disease [ 159 ] or comorbidities [ 143 , 145 ]. Socio-economic factors that affected BP control included living in an urban versus rural area [ 137 , 138 , 146 , 154 ], household income [ 139 , 141 , 144 – 146 , 149 , 150 ], education level [ 141 , 144 , 145 , 150 , 154 ], marital status [ 145 , 146 , 149 , 150 ], employment status [ 144 , 146 ] and health insurance [ 139 ].…”