Table 1 Description of correlates included at each time point
From: Modifiable factors which predict children’s gross motor competence: a prospective cohort study
Variable | Description and/or coding | Child aged 4 months Mean (SD) or tertile cut-points | Child aged 9 months Mean (SD) or tertile cut-points | Child aged 19 months Mean (SD) or tertile cut-points | Child aged 3.5 yearsa Mean (SD) or tertile cut-points |
|---|---|---|---|---|---|
Child behaviours | |||||
Time spent being physically active with mum | Proxy-report of the amount of time in the last week. Due to distribution of the data, divided into tertiles (low, medium, high). | Low = 0–26 Med = 29–60 High = 64–428 | Low = 0–34 Med = 39–86 High = 94–600 | Low = 0–60 Med = 69–120 High = 150–360 | Low = 0–420 Med = 435–480 High = 870–2820 |
Time spent having tummy time | Proxy-report of the amount of time in the last week. Due to distribution of the data, divided into tertiles (low, medium, high). | Low = 0–9 Med = 10–26 High = 30–257 | N/A | N/A | N/A |
Time spent on the floor (T1 & T2); Time spent ‘free to move around’ (T3 & T4) | Proxy-report of the amount of time in the last week. Due to distribution of the data, divided into tertiles (low, medium, high). | Low = 0–34 Med = 35–90 High = 94–428 | Low = 4–120 Med = 129–240 High = 257–600 | Low = 60–360 Med = 390–480 High = 510–1440 | Low = 0–3360 Med = 3480–4620 High = 4680–5880 |
Time spent with other children of a similar age | Proxy-report of the amount of time in the last week. Due to distribution of the data, divided into tertiles (low, medium, high). | Low = 0–13 Med = 15–17 High = 19–480 | Low = 0–17 Med = 20–34 High = 39–1371 | Low = 0–30 Med = 60–90 High = 120–1440 | Low = 0–600 Med = 630–1680 High = 1740–5400 |
Time spent with older children | Proxy-report of the amount of time in the last week. Due to distribution of the data, divided into tertiles (low, medium, high). | Low = 0–0 Med = 1–17 High = 26–343 | Low = 0–9 Med = 17–26 High = 34–343 | Low = 0–0 Med = 10–30 High = 60–600 | Low = 0–0 Med = 50–420 High = 465–5580 |
Time spent outside | Proxy-report of the amount of time in the last week. Due to distribution of the data, divided into tertiles (low, medium, high). | Low = 0–17 Med = 19–43 High = 51–275 | Low = 0–30 Med = 34–69 High = 77–257 | Low = 0–60 Med = 90–120 High = 150–480 | Low = 0–810 Med = 840–1260 High = 1320–2850 |
Organised activity | One item assessing children’s participation in an organised activity (Yes/No) | N/A | N/A | Yes = 49.0% No = 51.0% | Yes = 79.5% No = 20.5% |
Maternal beliefs | |||||
Maternal physical activity knowledgeb | Composite score (scale 0–3) of tenc questions examining the importance of physical activity for children’s health and development | 2.51 (0.34) | N/A | 2.54 (0.35) | 2.46 (0.32) |
Maternal physical activity viewsb | Composite score (scale 0–3) of four questions assessing mothers’ views of physically active children | 0.88 (0.43) | N/A | 0.73 (0.44) | 1.85 (0.45) |
Maternal physical activity optimismb | Composite score (scale 0–3) of 3 questions examining the anticipated ease of engaging children in physical activity | 2.32 (0.44) | 2.48 (0.47) | 2.39 (0.45) | 2.31 (0.51) |
Maternal physical activity self-efficacyb | Composite score (scale 0–3) of 3 questions examining mothers’ confidence for promoting physical activity | 2.49 (0.48) | 2.57 (0.47) | 2.51 (0.49) | 2.36 (0.52) |
Maternal floor concernsb | Composite score (scale 0–3) of two questions examining perceptions of safety of floor play | 0.93 (0.54) | N/A | N/A | N/A |
Parental behaviours | |||||
Parental facilitation of physical activity | Summed score of questions on parental facilitation of physical activity for children (1 Never or rarely, 2 Some days each week, 3 Most days each week, 4 Every day, 5 At least once a day, 6 Several times each day), converted into weekly equivalent scoresd | 23.84 (5.76) | 24.36 (5.70) | 40.87 (12.75) | 50.05 (10.12) |
Maternal physical activity | Mothers self-reported using the Active Australia Survey. Reported in minutes per past week. | 466.07 (355.78) | 486.35 (368.42) | 396.29 (375.29) | 398.68 (340. 72) |
Home environment | |||||
Physical activity equipment in home | T1-T3: Number of age-appropriate equipment items for young children parents’ anticipate they will provide in their homeb T4: How frequently child uses age-appropriate equipment items in their home (1 Don’t have, 2 Never/rarely, 3 Less than once per week, 4 1–2 times per week, 5 3–4 times per week, 6 5–6 times per week, 7 Daily). Items at T4 were: Balls, bats/rackets, bike/ride on, climbing equipment, trampoline, swings/slides, swimming pool, skipping rope, scooter, other toys that encourage active play. | 6.53 (2.16) | 5.76 (1.18) | 8.66 (1.90) | 35.03 (9.27) |