Table 4.
Changes in free thyroxine (FT4) and thyroxine (T4) levels.
| Hospital | Variable | FT4 (ng/dL) | T4 (μg/dL) | ||
|---|---|---|---|---|---|
| Before | After | Before | After | ||
| Index date | Index date | Index date | Index date | ||
| Total | Mean ± SD | 1.23 ± 0.32 | 1.2 ± 0.2 | 8.03 ± 1.25 | 7.27 ± 1.23 |
| N | 513 | 526 | 62 | 27 | |
| A | Mean ± SD | 1.22 ± 0.21 | 1.17 ± 0.24 | 8.75 ± 2.41 | 6.82 ± 1.98 |
| n | 112 | 117 | 19 | 9 | |
| B | Mean ± SD | 1.31 ± 0.57 | 1.3 ± 0.26 | 8.12 ± 1.87 | 6.66 ± 2.49 |
| n | 163 | 167 | 29 | 13 | |
| C | Mean ± SD | 1.1 ± 0.14 | 0.9 ± 0.18 | 8.38 ± 1.76 | 10.53 |
| n | 13 | 13 | 2 | 1 | |
| D | Mean ± SD | 1.15 ± 0.29 | 1.11 ± 0.28 | ||
| n | 44 | 45 | |||
| E | Mean ± SD | 1.23 ± 0.41 | 1.2 ± 0.27 | 5.96 ± 2.16 | 6.21 ± 0.46 |
| n | 65 | 59 | 6 | 3 | |
| F | Mean ± SD | 1.29 ± 0.3 | 1.24 ± 0.18 | 7.33 ± 2.51 | 4.5 |
| n | 39 | 44 | 6 | 1 | |
| G | Mean ± SD | 1.11 ± 0.3 | 1.11 ± 0.27 | ||
| n | 77 | 81 | |||
| Reference range | FT4: 0.9–1.7 ng/dL | T4: 5.0–11.0 μg/dL | |||
SD Standard deviation, Ft4 Free thyroxine, T4 Thyroxine.