| | |
School consented to data linkage question
| |
|---|
| |
Full SHW survey sample (n = 103,971; schools = 193)
|
Data linkage sub-sample (n = 18,956; schools = 39)
|
Data linkage control sample (n = 8374; schools = 22)a
|
Regression-based P-value (data linkage vs. non-data linkage sample)b
|
|---|
| |
n (%)
|
n (%)
|
n (%)
| |
|---|
|
Student-level
|
|
Gender
|
|
Male
|
50,452 (48.5)
|
9545 (50.4)
|
3788 (45.2)
|
0.078
|
|
Female
|
51,458 (49.5)
|
9064 (47.8)
|
4421 (52.8)
|
0.110
|
|
Did not want to answer
|
2061 (2.0)
|
347 (1.8)
|
165 (2.0)
|
0.283
|
|
School grade
|
|
Year 7
|
22,634 (21.8)
|
3787 (20.0)
|
2064 (24.7)
|
0.005
|
|
Year 8
|
22,421 (21.6)
|
4122 (21.8)
|
1998 (23.9)
|
0.755
|
|
Year 9
|
22,208 (21.4)
|
4347 (22.9)
|
1628 (19.4)
|
0.023
|
|
Year 10
|
19,704 (19.0)
|
3500 (18.5)
|
1417 (16.9)
|
0.580
|
|
Year 11
|
17,004 (16.4)
|
3200 (16.9)
|
1267 (15.1)
|
0.552
|
|
Weekly cigarette smoker
|
|
No
|
96,170 (96.6)
|
17,656 (96.9)
|
7745 (96.4)
|
–
|
|
Yes
|
3422 (3.4)
|
571 (3.1)
|
291 (3.6)
|
0.168
|
|
cannabis use
|
|
No
|
94,156 (95.6)
|
17,799 (96.2)
|
7604 (95.5)
|
–
|
|
Yes
|
4305 (4.4)
|
699 (3.8)
|
357 (4.5)
|
0.061
|
|
Ever truant
|
|
No
|
68,071 (73.9)
|
13,666 (75.4)
|
5457 (73.2)
|
–
|
|
Yes
|
23,989 (26.1)
|
4455 (24.6)
|
1995 (26.8)
|
0.046
|
|
Ever excluded
|
|
No
|
86,614 (92.2)
|
17,216 (93.0)
|
6947 (91.1)
|
–
|
|
Yes
|
7370 (7.8)
|
1304 (7.0)
|
675 (8.9)
|
0.091
|
|
SWEMWBS (sd.)
|
21.955 (4.51)
|
22.094 (4.33)
|
21.867 (4.40)
|
0.048
|
|
FAS (sd.)
|
9.28 (2.34)
|
9.333 (2.32)
|
9.166 (2.34)
|
0.557
|
|
School-level
|
|
Mean FAS (sd.)
|
9.309 (0.63)
|
9.353 (0.50)
|
9.192 (0.653)
|
0.595
|
- Notes: SWEMWBS, Short Warwick-Edinburgh Mental Wellbeing Scale; FAS, Family Affluence Scale
- aThe data linkage control sample refers to the 22/64 schools which consented to data linkage, but which were not randomly assigned to the data linkage sample following the 2:1 randomization process (see Fig. 1)
- bVariation in student socio-demographics and risk behaviours between samples were explored using binary and linear regression models (depending on the outcome variable) with adjustment for clustering by school. As the data linkage sample was nested within the full SHW survey sample, reported p-values were drawn from models comparing students attending data linkage (n = 39) versus non-data linkage (n = 154) schools
