Research Article
Levothyroxine Timing during Ramadan: A Randomized Clinical Trial
Table 1
Demographic and clinical characteristics of the patients.
| Factor | n (%) |
| Age | Mean (SD) | 50 (14.8) | Median (IQR) | 50 (39–63) | Minimum-maximum | 18–80 | Gender | Male | 15 (19) | Female | 64 (81) | Timing of thyroxine intake during Ramadan | 30 minutes before iftar | 29 (36.7) | 4 hours after iftar | 23 (29.1) | No specific advice | 27 (34.2) | Duration of hypothyroidism (years) | Mean (SD) | 6.4 (5.7) | Median (IQR) | 4 (2–11) | Minimum-maximum | 0.40–20 | Average levothyroxine dose | Mean (SD) | 112.2 (38.8) | Median (IQR) | 107 (92–143) | Minimum-maximum | 25–200 | FT4 level before Ramadan (reference range 9.0–19.0 pmol/L) | Mean (SD) | 14.1 (2.4) | Median (IQR) | 13.7 (12.3–15.8) | Minimum-maximum | 10–21.6 | TSH level before Ramadan (reference range 0.35–4.94 mIU/L) | Mean (SD) | 1.9 (1.8) | Median (IQR) | 1.3 (0.5–3) | Minimum-maximum | 0.01–6.7 | Cause of hypothyroidism | Hashimoto | 35 (44.3) | Postthyroidectomy | 40 (50.6) | Postradioactive iodine | 4 (5.1) | Other medications use | PPI | 7 (8.9) | Calcium | 16 (20.3) | No medications | 56 (70.9) |
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SD, standard deviation; IQR, interquartile range; PPI, proton pump inhibitors.
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