Patient responses to research recruitment and follow-up surveys: findings from a diverse multicultural health care setting in Qatar.

Among the participants agreeing to postal follow-up, a borderline significant difference was found between genders; more women than men did not disclose their postal address (83 % vs. 17 %) and more men than women (76 % vs. 24 %) responded at follow-up ( p = 0.045) (Table 6 ).

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