Table 1 Background information of the participants at baseline, 15 and 24 months of age
Baseline: intervention (n = 53) n (%) | Baseline: control (n = 51) n (%) | p value1 (of means) | 15 month: intervention (n = 44) n (%) | 15 month: control (n = 27) n (%) | p value1 (of means) | 24 month: intervention (n = 40) n (%) | 24 month: control (n = 24) n (%) | p value1 (of means) | |
|---|---|---|---|---|---|---|---|---|---|
Age: (mean) | |||||||||
Mother | 30.3 (4.6) | 30.9 (4.4) | .500 | 31.5 (4.8) | 31.6 (3.1) | .700 | 32.2 (4.7) | 32.5 (3.7) | .718 |
Father | 32.0 (5.1) | 33.7 (5.4) | .111 | 33.4 (6.2) | 33.1 (3.8) | .741 | 33.9 (5.2) | 33.7 (3.4) | .848 |
Educational level: | |||||||||
Mother | .096 | .678 | .845 | ||||||
No college/university degree | 6 (11) | 10 (20) | 4 (10) | 2 (7) | 5 (12.5) | 2 (8) | |||
College/university ≤ 4 years | 22 (42) | 25 (49) | 19 (43) | 14 (52) | 16 (40) | 12 (50) | |||
College/university ≥ 4 years | 25 (47) | 16 (31) | 21 (48) | 11 (41) | 19 (47.5) | 10 (42) | |||
Father | .200 | .464 | .960 | ||||||
No college/university degree | 15 (28) | 20 (39) | 16 (36) | 10 (37) | 13 (32.5) | 7 (29) | |||
College/university ≤ 4 years or less | 13 (25) | 11 (22) | 9 (20) | 7 (26) | 11 (27.5) | 6 (25) | |||
College/university ≥ 4 years | 23 (43) | 19 (37) | 19 (43) | 10 (37) | 16 (40) | 11 (46) | |||
Smoking: | |||||||||
Mother | .103 | .409 | .733 | ||||||
Daily | 0 (0) | 1 (2) | 0 (0) | 1 (4) | 0 (0) | 0 (0) | |||
Sometimes | 0 (0) | 2 (4) | 3 (7) | 2 (7) | 1 (2.5) | 1 (4) | |||
Never | 53 (100) | 48 (94) | 41 (93) | 24 (89) | 39 (97.5) | 23 (96) | |||
Father | .175 | .695 | .724 | ||||||
Daily | 2 (4) | 5 (10) | 0 (0) | 1 (4) | 1 (2.5) | 1 (4) | |||
Sometimes | 1 (2) | 2 (4) | 3 (7) | 2 (7) | 3 (7.5) | 2 (8) | |||
Never | 50 (94) | 44 (86) | 41 (93) | 24 (89) | 36 (90) | 21 (87.5) | |||
Mothers family situation: | .207 | .148 | .076 | ||||||
Married | 32 (60) | 24 (47) | 31 (70) | 14 (52) | 31 (77.5) | 14 (58) | |||
Cohabitant | 20 (38) | 26 (51) | 12 (27) | 12 (44) | 9 (22.5) | 8 (33) | |||
Single parent | 1 (2) | 1 (2) | 1 (2) | 1 (4) | 0 (0) | 1 (4) | |||