Table 2 Subgroup analysis of lithium users with normal serum calcium levels compared to lithium users with hypercalcemia
From: Hypercalcemia in patients with bipolar disorder treated with lithium: a cross-sectional study
| Lithium users with serum calcium level ≤2.60 (mmol/l) (n= 265) | Lithium users with serum calcium level >2.60 (mmol/l) (n= 49) | p value | |
|---|---|---|---|
| Gender (% female) | 60.4 | 67.3 | 0.457 |
| Age (years) | 47 (13) | 50 (13) | 0.174 |
| Lithium recent dosage (mg dd) | 960 (270) | 970 (330) | 0.759 |
| Creatinine (μmol/l) | 76.82 (17.00) | 81.91 (26.89) | 0.091 |
| TSH (mU/l) | 2.8 (3.8) | 2.0 (1.8) | 0.176 |
| Sodium (mmol/l) | 140.5 (2.20) | 140.7 (2.61) | 0.610 |
| Potassium (mmol/l) | 4.5 (0.34) | 4.5 (0.37) | 0.349 |
| Lithium serum level (mmol/l) | 0.74 (0.19) | 0.77 (0.18) | 0.379 |
| Lithium period (months) | 109 (84) | 165 (111) | 0.002 |
| Lifetime dosage quotient | 1.03 × 105 (8.3 × 104) | 1.63 × 105 (1.3 × 105) | 0.002 |