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. 2013 Dec 9;1:60. doi: 10.3389/fpubh.2013.00060

Table 4.

Descriptives for predictor variables in academic regression.

Age in years Academic performance Attitude toward school
N valid 975 704 975
N missing 0 271 0
M 13.63 2.16 0.60
SD 2.06 0.63 0.44

Factor analysis sample.