Correlates of Physical Activity of Students in Secondary School Physical Education: A Systematic Review of Literature

Table 1

Descriptive statistics for studies used in the systematic review.

Description	N (%)
Geographic location
United States of America (USA)	23 (53.5)
United Kingdom (UK)	4 (9.3)
Spain	4 (9.3)
Finland	2 (4.7)
Hong Kong	2 (4.7)
Other country	8 (18.6)
Sample size
<100	6 (14.0)
100-249	21 (48.8)
250-500	9 (20.9)
>500	7 (16.3)
Physical activity measurement
Questionnaires	2 (4.7)
Observed/SOFIT	8 (18.6)
HR monitor	10 (23.3)
Pedometers	10 (23.3)
Accelerometer	13 (30.2)
Analytical approaches
Univariate analysis	37 (86.0)
Multivariate analysis	20 (46.5)
Methodological quality
= median score 4	21 (48.8)
>median score 4	22 (51.2)
Variable categories
Demographic/biological variables	23 (53.5)
Instruction-related variables	21 (48.8)
School physical environment variables	9 (20.9)
Psychological variables	16 (37.2)