Table 4. Biological and nutritional characteristics of infants that were associated with Bayley III screening subtest scores among infants.
| Variables | Screening subtests of Bayley III | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Total n (%) | Cognitive | Receptive communication | Gross motor | ||||||||
| C | E | P | C | E | P | C | E | P | |||
| n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | ||||||
| Sex | |||||||||||
| Male | 77 (56.6) | 64 (83.1) | 13 (16.9) | 0.13 | 37 (48.1) | 40 (51.9) | 0.006 | 67 (87.0) | 10 (13.0) | 0.37 | |
| Female | 59 (43.4) | 55 (93.2) | 4 (6.8) | 43 (72.9) | 16 (27.1) | 55 (93.2) | 4 (6.8) | ||||
| Exclusive breastfeeding (months) | |||||||||||
| 0 - 2 | 52 (38.2) | 46 (88.5) | 6 (11.5) | 1.00 | 28 (53.8) | 24 (46.2) | 0.45 | 46 (88.5) | 6 (11.5) | 0.93 | |
| ≥ 3 | 84 (61.8) | 73 (86.9) | 11 (13.1) | 52 (61.9) | 32 (38.1) | 76 (90.5) | 8 (9.5) | ||||
| Hospitalization | |||||||||||
| Yes | 33 (24.3) | 31 (93.9) | 2 (6.1) | 0.36* | 22 (66.7) | 11 (33.3) | 0.40 | 30 (90.9) | 3 (9.1) | 1.00* | |
| No | 103 (75.7) | 89 (85.6) | 15 (14.4) | 58 (56.3) | 45 (43.7) | 92 (89.3) | 11 (10.7) | ||||
| Length-for-age (z-score) † | |||||||||||
| < -1 | 30 (22.4) | 24 (80.0) | 6 (20.0) | 0.21* | 16 (53.3) | 14 (46.7) | 0.62 | 29 (96.7) | 1 (3.3) | 0.19* | |
| ≥ -1 | 104 (77.6) | 93 (89.4) | 11 (10.6) | 63 (60.6) | 41 (39.4) | 91 (87.5) | 13 (12.5) | ||||
| Weight-for-age (z-score) | |||||||||||
| < -1 | 10 (7.5) | 8 (80.0) | 2 (20.0) | 0.61* | 4 (40.0) | 6 (60.0) | 0.32* | 10 (100) | 0 | 0.60* | |
| ≥ -1 | 124 (92.5) | 109 (87.9) | 15 (12.1) | 75 (60.5) | 49 (39.5) | 110 (88.7) | 14 (11.3) | ||||
| Head circumference-for-age (z-score) ‡ | |||||||||||
| ≤ 0 | 39 (28.9) | 32 (82.1) | 7 (17.9) | 0.26* | 19 (48.7) | 20 (51.3) | 0.16 | 37 (94.9) | 2 (5.1) | 0.35* | |
| > 0 | 96 (71.1) | 86 (89.6) | 10 (10.4) | 61 (63.5) | 35 (36.5) | 85(88.5) | 11 (11.5) | ||||
C = Competent; E = Emerging
*
Fisher exact test
†
missing information in 2 cases
‡
missing information in 1 case.