Table 4.

Concordance of classification of clinical categories of plasma 25-hydroxvitmain D [25(OH)D] concentrations at follow-up (2002–2005) based on clinical categories at baseline (1997–2000) among 672 participants in the Osteoporosis and Periodontal Disease (OsteoPerio) Study

Follow-up: At risk for deficiency (<30 nmol/L)Follow-up: At risk for inadequacy (≥30–<50 nmol/L)Follow-up: Adequate (≥50–<75 nmol/L)Follow-up: Adequate (≥75 nmol/L)
Baseline: At risk for deficiency (<30 nmol/L)14 (24.1%)22 (37.9%)20 (34.5%)2 (3.5%)
Baseline: At risk for inadequacy (≥30–<50 nmol/L)6 (3.8%)52 (33.1%)80 (51.0%)19 (12.1%)
Baseline: Adequate (≥50–<75 nmol/L)1 (0.3%)30 (9.8%)176 (57.7%)98 (32.1%)
Baseline: Adequate (≥75 nmol/L)1 (0.7%)5 (3.3%)41 (27.0%)106 (69.7%)

NOTE: N and row percent presented.