Table 1 Sample descriptives at age 9/12 in the total sample (n = 3949), children physically active at age 15 (self-report) (n = 2624) and children not physically active at age 15 (self-report) (n = 1325)
From: Inattention and hyperactivity symptoms in childhood predict physical activity in adolescence
Total sample (n = 3949) | Children physically active at age 15 (n = 2624) | Children not physically active at age 15 (n = 1325) | |
|---|---|---|---|
Variables | |||
ADHD symptoms | M (SD), Md (IQR) | M (SD), Md (IQR) | M (SD), Md (IQR) |
Inattention symptoms | 0.77 (1.40), 0.00 (1.00) | 1.28 (0.67), 0.00 (1.00) | 0.97 (1.60), 0.00 (2.00) |
Hyperactivity/Impulsivity symptoms | 0.61 (1.21), 0.00 (1.00) | 1.19 (0.60), 0.00 (1.00) | 0.64 (1.26), 0.00 (1.00) |
Covariates | n (%) | n (%) | n (%) |
Sex | |||
Boys | 1884 (47.7) | 1328 (50.6) | 556 (42.0) |
Girls | 2065 (52.3) | 1296 (49.4) | 769 (58.0) |
Age | |||
9 | 1492 (37.8) | 1617 (61.6) | 840 (63.4) |
12 | 2457 (62.2) | 1007 (38.4) | 485 (36.6) |
Mother’s level of education | |||
University degree | 1894 (48.0) | 1331 (50.7) | 563 (42.5) |
Compulsory school/dropped out of compulsory school | 157 (4.0) | 97 (3.7) | 60 (4.5) |
Upper secondary school 2–4 years | 1618 (41.0) | 1030 (39.3) | 588 (44.4) |
Other education1 | 280 (7.1) | 166 (6.3) | 114 (8.6) |
Father’s level of education | |||
University degree | 1321 (33.5) | 922 (35.1) | 399 (30.1) |
Compulsory school/dropped out of compulsory school | 421 (10.7) | 229 (8.7) | 192 (14.5) |
Upper secondary school 2–4 years | 1988 (50.3) | 1337 (51.0) | 651 (49.1) |
Other education1 | 219 (5.5) | 136 (5.2) | 83 (6.3) |
Time spent per day to walk, cycle and/or run to and from school, age 9 | |||
Less than 15 min | 1648 (41.7) | 1085 (41.3) | 563 (42.5) |
15 min to more than one hour | 2301 (58.3) | 1539 (58.7) | 762 (57.5) |
Occurrence of exercise/work out on spare time, age 9 | |||
About one occasion per week or less | 470 (11.9) | 220 (8.4) | 250 (18.9) |
Two-three times per week to almost every day | 3479 (88.1) | 2404 (91.6) | 1075 (81.1) |
Screen positive for NDP2 problems | |||
Tic disorder | 53 (1.3) | 28 (1.1) | 25 (1.9) |
Learning disorder | 330 (8.4) | 176 (6.7) | 157 (11.6) |
Autism spectrum disorder | 66 (1.7) | 29 (1.1) | 37 (2.8) |
Developmental coordination disorder | 38 (1.0) | 19 (0.7) | 19 (1.4) |
Screen positive for NDP-related problems | |||
Obsessive-compulsive disorder | 40 (1.0) | 24 (0.9) | 16 (1.2) |
Oppositional defiance disorder | 47 (1.2) | 25 (1.0) | 22 (1.7) |
Eating disorder | 10 (0.3) | 4 (0.2) | 6 (0.5) |
Conduct disorder | 4 (0.1) | 4 (0.2) | 0 (0.0) |