Table 4.

Mean (SE) Adjusted Annualized Decline in Lung Function from Peak Measurement to Year 20 across Categorical Fitness Change Groupings

	Sustained High Fitness	Increased Fitness	Decreased Fitness	Sustained Low Fitness
FEV1, ml/yr	31.1*† (0.62)	31.6*† (0.99)	36.9 (0.83)	36.7 (0.62)
FVC, ml/yr	31.2*† (0.75)	31.5*† (1.19)	37.8 (1.01)	37.3 (0.76)
FEV1/FVC, %/yr	0.33 (0.009)	0.33 (0.015)	0.35 (0.012)	0.35 (0.009)

Values adjusted for age, race-sex group, height, center, peak lung function, years from peak lung function to Year 20, body mass index (Yr 0), change in body mass index (Yr 0 to Yr 20), lifetime pack-years smoked (Yr 20).

^*P < 0.001 versus sustained lower fitness group.

^†P < 0.001 versus decreased fitness group.