| Total (n = 760) | Female (n = 719) | Male (n = 41) | p value |
| ||||
Age (year) | 40(12.6) | 39.7(12.4) | 46.1(15.4) | 0.013 |
| ||||
Ca(mg/dL) | 9.5(1.2) | 9.5(1.2) | 9.5(0.7) | 0.829 |
| ||||
Corrected Ca (mg/dL) | 9.7(0.5) | 9.7(0.5) | 9.8(0.8) | 0.387 |
| ||||
Phosphate (mg/dL) | 3.5(0.6) | 3.5(0.6) | 3.6(0.6) | 0.249 |
| ||||
iPTH (pg/mL) | 58.2(39.9) | 58.9(40.4) | 45.1(26.2) | 0.031 |
| ||||
25(OH) D (ng/mL) | 20.4(17.2) | 20.2(17.1) | 24.7(18.5) | 0.103 |
| ||||
| Total | Females | Males | ||||||
| Winter (n = 448) | Summer (n = 312) | p value | Winter (n = 428) | Summer (n = 291) | p value | Winter (n = 20) | Summer (n = 21) | p value |
Age (year) | 37.4(11.4) | 43.8(13.4) | 0.0001 | 37.3(11.2) | 43.1(13.2) | 0.0001 | 39.5(14.7) | 52.3(13.7) | 0.006 |
Ca(mg/dL) | 9.4(0.5) | 9.6(1.8) | 0.048 | 9.4(0.5) | 9.6(1.9) | 0.048 | 9.6(0.8) | 9.5(0.7) | 0.752 |
Corrected Ca (mg/dL) | 9.7(0.5) | 9.7(0.6) | 0.055 | 9.7(0.5) | 9.7(0.6) | 0.082 | 10.0(0.8) | 9.7(0.8) | 0.239 |
Phosphate (mg/dL) | 3.5(0.5) | 3.5(0.6) | 0.593 | 3.5(0.6) | 3.5(0.6) | 0.759 | 3.6(0.6) | 3.7(0.6) | 0.458 |
iPTH (pg/mL) | 54.2(32.8) | 63.9(47.7) | 0.002 | 54.6(32.9) | 65.3(48.8) | 0.001 | 45.5(30.8) | 44.8(21.7) | 0.927 |
25(OH) D (ng/mL) | 21.3(17.5) | 19.2(16.7) | 0.110 | 21.1(17.4) | 18.8(16.5) | 0.084 | 24.8(19.4) | 24.5(18.0) | 0.963 |