Table 3.
Distribution of circadian cycles according to gestational age groups in each period.
| Gestational age | Period 1 | Period 2 | Period 3 | Period 4 | |||||
| Groups | n | (0–3 d) | n | (4–6 d) | n | (7–13 d) | n | (14–21 d) | |
| PR | <28 wks | 10 | 4 (40) | 12 | 3 (25) | 12 | 5 (41.7) | 13 | 4 (30.8) |
| 28–32 wks | 26 | 6 (23.1) | 22 | 6 (27.3) | 42 | 11 (26.2) | 39 | 9 (23.1) | |
| 33–36 wks | 29 | 5 (17.2) | 26 | 5 (19.2) | 31 | 2 (6.5) | 23 | 3 (13.0) | |
| ≥37 wks | 35 | 5 (14.3) | 27 | 2 (7.4) | 19 | 2 (10.5) | 8 | 0 (0) | |
| RR | < 28 wks | 7 | 1 (14.3) | 11 | 1(9.1) | 13 | 5 (38.5) | 13 | 0 (0) |
| 28–32 wks | 24 | 8 (33.3) | 20 | 9 (45) | 38 | 9 (23.7) | 36 | 8 (22.2) | |
| 33–36 wks | 25 | 8 (32) | 27 | 9 (33.3) | 28 | 3 (10.7) | 22 | 2 (9.1) | |
| ≥37 wks | 34 | 8 (23.5) | 26 | 9 (34.6) | 18 | 4 (22.2) | 8 | 1(12.5) | |
| SpO2 | < 28 wks | 10 | 0 (0) | 12 | 3 (25) | 12 | 3 (25) | 13 | 2 (15.4) |
| 28–32 wks | 25 | 5 (20) | 20 | 3 (15) | 40 | 7 (17.5) | 37 | 9 (24.3) | |
| 33–36 wks | 26 | 5 (19.2) | 25 | 5 (20) | 32 | 4 (12.5) | 20 | 3 (15) | |
| ≥37 wks | 33 | 5 (15.2) | 29 | 4 (13.8) | 19 | 3 (15.8) | 8 | 1 (12.5) |
Data are shown in n (%).