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. 2012 Jul 9;345:e3953. doi: 10.1136/bmj.e3953

Table 5.

Examples of sensitivity analyses

Theme (group excluded)	Countries, studies
Stress as cause of hypertension:
Excluding studies in specific ethnic groups	Brazil^{32 61 64 67}; Canada⁶²; Denmark⁶⁵; Ghana⁶⁹; Tanzania⁷⁰; Thailand⁶⁰; USA²⁴
Excluding lower quality studies*	Brazil^{32 61}; Canada^{35 62}; Denmark⁶⁵; Israel³⁸; Netherlands^{22 23} (1 study); Thailand⁶⁰; UK⁵⁷; USA^{24 25 27 33 40 49 52 76}
Hypertension causes symptoms:
Excluding studies in specific ethnic groups	Brazil^{32 61 6467}; Denmark⁶⁵; Ghana⁶⁹; New Zealand⁷²; South Korea⁴⁸; Spain³⁷; Sweden^{46 71}; Tanzania⁷⁰; Thailand⁶⁰; UK²⁰
Excluding lower quality studies*	Brazil^{32 61}; Canada³⁵; Denmark⁶⁵; Netherlands^{22 23} (1 study); New Zealand⁷²; South Korea⁴⁸; Spain³⁷; Sweden^{46 71}; Thailand⁶⁰; UK^{20 28 56 57} (3 studies); USA^{27 33 34 40 52 58 63 66}

*Quality score <9/11.