Table 1 Definition of UA levels and potential confounding factors and missingess rate
variables | Assignments | Missingess Rate | ||||||
|---|---|---|---|---|---|---|---|---|
UA | qualified by their quartiles of P25, P50 and P75 every year; Q1: the UA level ≤ P25, Q2: P25 < the UA level < P50, Q3: P50 < the UA level < P75, Q4: the UA level ≥ P75 | 0 | ||||||
| Â | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | ||
P25 | 297 | 323 | 302 | 306 | 307 | 323 | ||
P50 | 353 | 372 | 345 | 349 | 353 | 368 | ||
P75 | 406 | 419 | 392 | 397 | 401 | 416 | ||
GGT | gamma-glutamyltranspeptidase , U/L | 1 % | ||||||
ALB | serum albumin, g/L | 1 % | ||||||
GLO | serum globulins, g/L | 1 % | ||||||
BUN | blood urea nitrogen, mg/L | 1 % | ||||||
CREA | serum creatinine, mg/dl | 1 % | ||||||
CHOL | Total cholesterol, mg/dl | 1 % | ||||||
Hb | Hemoglobin, g/L | 1 % | ||||||
HCT | Hematokrit, % | 1 % | ||||||
MCV | mean corpuscular volume, fL | 1 % | ||||||
MCH | mean corpuscular hemoglobin, pg | 1 % | ||||||
RDW | Red blood cell distribution width, % | 1 % | ||||||
WBC | white blood count, 109g/L | 1 % | ||||||
PDW | Platelet distribution width | 1 % | ||||||
MPV | mean platelet volume, fL | 1 % | ||||||
PCT | Thrombocytocrit, % | 1 % | ||||||
diet | 0: Vegetarian, 1: meat-based, 2: normal, 3: sea food | 17 % | ||||||
drinking | 0: never, 1: seldom, 2: often, wine, 3: often beer, 4: often, Chinese spirits, 5: often, mixed all kinds | 6 % | ||||||
smoking | 0: never, 1: seldom, 2: quit, 3: 1-4/d, 4: 5-15/d, 5: >15/d | 6 % | ||||||
quality of sleep | 0: excellent, 1: well, 2: fair, 3: poor, 4: very poor | 6 % | ||||||
exercise | 0: never, 1: seldom, 2: often or everyday | 6 % | ||||||