Seasons | |||||
---|---|---|---|---|---|
Autumn | Winter | Spring | Summer | P values | |
Number of patients | 198 | 145 | 266 | 172 | – |
Male (N° of pts.; %) | 128 (64.4%) | 86 (59.3%) | 173 (65%) | 115 (66.9%) | NS |
Age | 5.1 ± 2.8 (1.0–16.11) | 4.3 ± 1.9 (1.0–13.2) | 5.1 ± 2.4 (1.2–15.3) | 5.0 ± 2.6 (1.0–14.6) | W vs A, Spr, Su < 0.02 |
BMI Z-score | −0.3 ± 2.7 (−3.9–2.7) | −0.2 ± 2.7 (−3.5–2.8) | −0.3 ± 2.9 (−3.2–2.9) | −0.3 ± 2.8 (−3.4–2.7) | NS |
TERT (hrs) | 8.0 ± 1.2 (6.0–13.1) | 8.1 ± 1.2 (6.0–12.2) | 8.1 ± 1.2 (6.0–11.4) | 7.8 ± 1.1 (6.0–11.1) | Su vs W, Spr < 0.05 |
mean SpO2 (%) | 98.1 ± 1.3 (86.5–99.9) | 97.7 ± 1.5 (92.0–99.8) | 97.8 ± 1.0 (88.3–99.9) | 98.0 ± 1.0 (92.2–99.9) | A vs W, Spr < 0.002 |
nadir SpO2 (%) | 90.8 ± 7.7 (29.0–99.0) | 87.9 ± 11.1 (6.0–97.0) | 90.2 ± 6.2 (6.0–9 8.0) | 90.8 ± 5.8 (64.0–98.0) | W vs A, Spr, Su < 0.005 |
SpO2 < 90% (% TERT) | 0.6 ± 5.4 (0.0–73.9) | 0.8 ± 3.2 (0.0–25.3) | 0.4 ± 0.6 (0.0–25.5) | 0.1 ± 0.4 (0.0–3.7) | W vs A, Spr < 0.02 |
DI4 (Falls in saturation by ≥4%/hrs) | 2.2 ± 5.0 (0.0–42.1) | 4.5 ± 10.9 (0.0–113.4) | 2.6 ± 4.2 (0.0–91.3) | 2.0 ± 2.8 (0.0–33.6) | W vs A, Spr, Su < 0.005 |
mean PR (BPM) | 87.0 ± 13.2 (53.3–141.0) | 91.2 ± 13.1 (60.0–138.0) | 86.0 ± 11.9 (54.0–122.0) | 85.5 ± 12.8 (51.0–114) | W vs A, Spr, Su < 0.001 |
Diagnostic Studies (N°,%) | 20 (10.1%) | 32 (22.1%) | 33 (12.4%) | 19 (11.0%) | Chi-squared = 12.36; p < 0.01 |