Ammal M Metwally, Walaa A Basha, Ghada A Elshaarawy, Sara F Sallam, Inas R El-Alameey, Amira S El Rifay, Walaa Yousef, Amira A Goda, Galal A Elashry, Doaa E Ahmed, Nayera E Hassan, Sahar A El-Masry, Nihad A Ibrahim, Soha M Abd El Dayem, Wafaa A Kandeel, Ebtissam M Salah El-Din, Rokia Abd Elshafy S El Banna, Iman H Kamel, Enas M Abdelhamid, Mohamed Abdelrahman, Walaa S Mahmoud
How did the use of the social marketing approach in Egyptian communities succeed in improving breastfeeding practices and infants' growth?
BMC public health
method data collection household health surveys major determinant cost data quality survey strategy comprise mail telephone home interview methods individually combination follow nonrespondents purpose study montreal compare cost data quality various strategies strategies began mail telephone contact followed two methods provided response rates high home interview strategy 80 90 per cent onehalf cost home interviews used sole method telephone response rate higher mail response rate comparing different followup approaches strategies beginning mail telephone proved less costly equally effective use home interviewing last resort persistent nonrespondents validity response comparing individual responses records government health insurance data bank willingness answer sensitive questions greatest mail strategy