Whаt cоnclusiоns cаn yоu drаw from the following data, obtained from a 41-year-old man who admits to “occasional smoking” but otherwise reveals no past history of pulmonary problems? ACTUAL PRED % PRED ACTUAL PRED % PRED TLC 4.75 4.90 97% FVC 2.96 3.63 82% FRC 2.31 2.21 105% %FEV1 82% 78% RV 1.28 1.20 106% FEF200-1200 4.33 5.45 79% VC 3.48 3.63 96% FEF25%-75% 1.95 3.37 58%