4.5 N/A 4.5 - Dialysis N/A 5.5 N/A 5.5 2022 Discount rates 4.5-5.4 5.4-5.5 5.1 5.4 Salary increment rate 4.0-6.0 N/A 6.0 N/A Medical cost inflation: - Inpatient N/A 5.5 N/A 5.5 - Outpatient N/A 4.5 N/A 4.5 Others: - Specialist N/A 4.5 N/A 4.5 - Dialysis N/A 5.5 N/A 5.5 The effect of a 1.0% movement in the key assumptions to the defined benefit obligation balances are as follows: RBTF PRMBS Increase RM’million Decrease RM’million Increase RM’million Decrease RM’million Group 2023 Medical cost trend rate N/A N/A 1,490.8 (1,266.0) Discount rate (89.2) 98.1 (1,305.6) 1,571.6 Salary increment rate 117.7 (109.0) N/A N/A 2022 Medical cost trend rate N/A N/A 1,367.4 (1,162.9) Discount rate (103.3) 113.9 (1,191.4) 1,430.0 Salary increment rate 129.1 (118.8) N/A N/A NOTES TO THE FINANCIALSTATEMENTS 31 December 2023 FINANCIAL STATEMENTS Sec 5 265 24 EMPLOYEE BENEFITS (CONTINUED) The effect of a 1.0% movement in the key assumptions to the defined benefit obligation balances are as follows: (continued) RBTF PRMBS Increase RM’million Decrease RM’million Increase RM’million Decrease RM’million Company 2023 Medical cost trend rate N/A N/A 1,380.6 (1,175.3) Discount rate (87.3) 96.0 (1,212.8) 1,456.4 Salary increment rate 115.8 (106.8) N/A N/A 2022 Medical cost trend rate N/A N/A 1,273.7 (1,085.7) Discount rate (100.9) 111.2 (1,112.9) 1,332.8 Salary increment rate 125.9 (115.9) N/A N/A The sensitivity analysis has been provided based on membership data as at 31 December 2023 and considered a change of each principal assumption in isolation. The method and types of assumptions used in preparing the sensitivity analysis did not change compared to the previous period. The weighted average duration of the Group’s and of the Company’s liabilities are estimated at approximately 6 and 14 years for RBTF and PRMBS respectively. Plan assets for RBTF comprise: Group and Company 2023 % 2022 % Equity instruments - quoted 43.7 47.5 Debt instruments - quoted 19.5 18.1 - unquoted 23.8 21.6 Others 13.0 12.8 100.0 100.0 The plan assets for RBTF