Table 1 Descriptive statistics of study sample by the level of or change in indoor air quality (IAQ) as evaluated by pupils
From: School environment as predictor of teacher sick leave: data-linked prospective cohort study
2004/05 Teacher characteristics | All, 93 schools (n = 1678) | 1 Poor IAQ at both times, 28 schools (n = 485) | 2 Good IAQ at both times, 37 schools (n = 699) | 3 Negative change; from good to poor AIQ, 7 schools (n = 121) | 4 Positive change from poor to good IAQ, 21 schools (n = 373) | P for difference between groups***** |
|---|---|---|---|---|---|---|
Mean age, years | 47.9 | 47.6 | 48.1 | 48.4 | 47.6 | 0.57 |
Percentage of male teachers | 26.5 | 25.0 | 29.0 | 21.5 | 25.5 | 0.20 |
Percentage of teachers with fixed-term job contracts | 14.0 | 14.6 | 13.6 | 20.7 | 11.8 | 0.10 |
Percentage of special education teachers | 5.5 | 6.2 | 5.7 | 1.7 | 5.6 | 0.58 |
Percentage of teachers in schools with | ||||||
high PTR* | 46.8 | 50.5 | 36.3 | 76.9 | 52.0 | <0.001 |
high pupil cohort socioeconomic composition** | 48.1 | 36.7 | 47.6 | 66.9 | 57.6 | <0.001 |
Negative change*** | ||||||
school satisfaction | 13.8 | 20.8 | 4.3 | 14.1 | 22.5 | <0.001 |
pupils being bullied | 20.9 | 28.0 | 20.6 | 25.6 | 10.5 | <0.001 |
pupils bullying others | 17.1 | 16.5 | 15.2 | 36.4 | 15.3 | <0.001 |
School location/follow-up time**** | ||||||
Metropolitan area | 66.5 | 77.9 | 53.7 | 100 | 64.9 | <0.001 |
Other | 33.5 | 22.1 | 46.3 | 0 | 35.1 | |