I was very sick as an infant, but did OK, actually pretty normal through the school years, never being hospitilized and/or had IV's (except as a baby) until approx my 30's. I've always had normal to severe clubbing, so yes, I've heard that it indicates lung severity, but have to half way disagree with that unless maybe mine got clubbed when I did have the lung involvement as a baby and just "stuck" with me? Who knows.<img src="i/expressions/face-icon-small-confused.gif" border="0">
I think unfortunately with CF, there are a number of unknowns. Such as two siblings having the exact same mutations and one has a severe case, one has a mild case, etc.