Perbedaan Lama Masa Rawat, Kualitas Hidup, dan Efektivitas Biaya Perawatan Pasien Geriatri di Ruang Rawat Akut RSCM Sebelum dan Sesudah Penerapan Jaminan Kesehatan Nasional = The difference in length of stay, quality of life, and cost effectiveness of care for geriatric patients in acute care or elderly Cipto Mangunkusumo Hospital before and after National Health Insurance Program Implementation