Source data | Harmonisation | ||||
---|---|---|---|---|---|
Study Wave | Variable(s): name(s), description | Summary | Category | Processing | Summary |
SPEEDY* Wave: 1 | Variable names: W1_a2acthrs_clean W1_a2actmins_clean W1_a3acthrs_clean W1_a3actmins_clean Duration of journey when walking or cycling to school | Continuous variables. Duration when walking in minutes per day Mean: 12.7 Median: 10 25th percentile: 5 75th percentile: 15 Range: 0, 60 Duration when cycling in minutes per day Mean: 11.2 Median: 10 25th percentile: 5 75th percentile: 15 Range: 0, 60 | Less than 5 min | If duration of walking or cycling <=5 | n = 356 |
6–15 min | If duration of walking or cycling = 6–15 (inclusive) | n = 432 | |||
More than 15 min | If duration of walking or cycling >15 | n = 193 | |||
Missing | n = 1083 | ||||
KISS Wave: 1 | Variable name: a_schulweg_hin_sommer_time Duration of journey to school | Continuous variable. Duration in minutes per day: Mean: 9.9 Median: 10 25th percentile: 5 75th percentile: 15 Range: 1, 30 Missing, n = 88 | Less than 5 min | If [a_schulweg_hin_sommer_time] < =5 | n = 153 |
6–15 min | If [a_schulweg_hin_sommer_time] = 6–15 (inclusive) | n = 249 | |||
More than 15 min | If [a_schulweg_hin_sommer_time] >15 | n = 50 | |||
Missing | If [a_schulweg_hin_sommer_time] = Missing | n = 88 | |||
Ballabeina Wave: 1 | Variable name: W1_a_langeweg Duration of journey to school | Categorical variable: <10 min, n = 514 10–20 min, n = 82 >20 min, n = 10 Missing, n = 63 | Response categories for this study captured different duration boundaries to those of the harmonised variable and could not be suitably collapsed or otherwise matched. Therefore, this study was not included in the harmonised variable. |