Exhibit 99.28 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-I KEY PERFORMANCE FACTORS January 31, 1999 Expected B Maturity 8/16/04 Blended Coupon 6.3897% Excess Protection Level 3 Month Average 5.81% January, 1999 5.81% December, 1998 5.87% November, 1998 5.74% Cash Yield18.21% Investor Charge Offs 4.95% Base Rate 7.45% 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$750,000,000.00 Seller Participation Amount$3,284,946,121.49