Post hoc descriptive analysis of data stratified by FAO category ( screening post-albuterol FEV@/FVC < lower limit of normal -LSB- LLN -RSB- -LSB- FAO + -RSB- or LLN -LSB- FAO - -RSB- ) from two @-week , randomized , placebo-controlled studies of budesonide/formoterol or the monocomponents in mild-moderate ( study I ; aged @ years ; NCT@ ; placebo run-in ) or moderate-severe ( study II ; @ years ; NCT@ ; budesonide run-in ) asthma patients .