Exhibit 99.37 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-F KEY PERFORMANCE FACTORS January 31, 1999 Expected B Maturity 9/15/2005 Blended Coupon 5.4188% Excess Protection Level 3 Month Average 5.69% January, 1999 5.53% December, 1998 6.16% November, 1998 5.40% Cash Yield18.23% Investor Charge Offs 4.95% Base Rate 7.75% Over 35 Day Delinquency 5.29% Seller's Interest 8.19% Total Payment Rate14.12% Total Principal Balance$40,086,865,639.98 Investor Participation Amount$500,000,000.00 Seller Participation Amount$3,284,946,121.49