Table 2.

Hemodialysis session details and biochemical characteristics across the study.

Hemodialysis Session	Pre-Pandemic		Post-Pandemic
Session duration (minutes)
Mean (SD)	230.2	(8.6)	231.2	(7.2)
Median (1st Q–3rd Q)	232	(230–233)	232	(231–234)
Dry weight (Kg)
Mean (SD)	70.3	(14.6)	67.6	(15.2)
Median (1st Q–3rd Q)	68.5	(59.7–77.1)	64.5	(57.4–74.5)
KtV sp
Mean (SD)	1.49	(0.23)	1.61	(0.25)
Median (1st Q–3rd Q)	1.50	(1.31–1.66)	1.55	(1.42–1.75)
Heart rate (beats per minute)
Mean (SD)	67	(9)	68	(9)
Median (1st Q–3rd Q)	68	(61–75)	68	(63.5–74.5)
Systolic blood pressure (mmHg)
Mean (SD)	143	(16)	145	(22)
Median (1st Q–3rd Q)	141	(135–154)	147	(130–162)
Diastolic blood pressure (mmHg)
Mean (SD)	60	(10)	60	(11)
Median (1st Q–3rd Q)	59	(52–67)	59	(53–67)
Biochemical Characteristics	Pre-Pandemic		Post-Pandemic
Hemoglobin (g/dL)
Mean (SD)	11.3	(0.9)	11.6	(1.2)
Median (1st Q–3rd Q)	11.2	(10.8–11.6)	11.8	(11.2–12.5)
Albumin (g/dL)
Mean (SD)	4.1	(0.3)	3.9	(0.4)
Median (min–max)	4.0	(3.8–4.2)	3.9	(3.8–4.2)
Phosphorus (mg/dL)
Mean (SD)	4.3	(1.7)	31.3	(18.6)
Median (1st Q–3rd Q)	4.1	(3.2–5.4)	37	(10–48)
Ferritin (ng/mL)
Mean (SD)	525.6	(312.0)	539.5	(291.2)
Median (1st Q–3rd Q)	482	(313–729.5)	613	(297.5–760)
PTH intacta (pg/mL)
Mean (SD)	273.8	(200.9)	244.2	(126.3)
Median (1st Q–3rd Q)	266	(163.5–308.5)	218	(178–318)
Calcium (mg/dL)
Mean (SD)	9.1	(0.8)	8.5	(0.6)
Median (1st Q–3rd Q)	9.1	(8.5–9.4)	8.3	(8.1–8.9)
Phosphorus (mg/dL)
Mean (SD)	4.3	(1.7)	31.3	(18.6)
Median (1st Q–3rd Q)	4.1	(3.2–5.4)	37	(10–48)

Legend: Post-Pandemic, November 2020 to February 2021; Pre-Pandemic, November 2019 to February 2020; Q, Quartile; SD, Standard Deviation.