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Table 2 Associations between 3 behaviours and Average Academic Index, Maths and English academic performance

From: Associations between meeting sleep, physical activity or screen time behaviour guidelines and academic performance in Australian school children

 Average Academic IndexMathsEnglish
 NΒ (95%CI)P-valueNβP-valueNβP-value
Sleep
 Weekday sleep (hrs/night)8290.05 (− 0.6, 0.7).888824−0.3 (−1.4, 0.8).6147720.02 (−0.6, 0.6).954
 Weekend sleep (hrs/night)8270.3 (− 0.2, 0.8).2418220.03 (− 0.9, 0.9).9557700.5 (0.06, 1.0).028
 Weekday bedtime ≥23:00829−1.1 (−3.3, 1.2).3658240.2 (−3.7, 4.0).939772−1.3 (− 3.4, 0.9).245
 Weekend bedtime ≥23:00828−3.4 (−5.0, −1.7)<.001823−3.9 (−6.7, − 1.1).006771−2.1 (− 3.6, −0.6).005
 Poor sleep quality (vs not poor)8131.3 (−1.2, 3.8).3058081.3 (− 2.9, 5.5).549756−0.1 (−2.3, 2.2).958
 Meeting sleep guidelines8271.1 (−0.5, 2.8).1708220.7 (−2.1, 3.5).6217701.0 (−0.5, 2.5).174
PA
 Days getting 60 min MVPA8390.1 (−0.3, 0.5).5868340.2 (−0.4, 0.8).5617820.1 (−0.2, 0.4).632
 Participated in sport8370.3 (−2.3, 2.8).8478320.7 (−3.7, 5.1).747780−0.1 (−2.5, 2.3).916
 Unorganized play (hr/day)836−1.0 (−1.3, −0.6)<.001831− 1.5 (−2.1, − 0.9)<.001779−0.7 (− 1.0, − 0.3)<.001
 Meeting PA guidelines8390.3 (− 1.5, 2.1).7848341.2 (− 1.9, 4.3).4427820.1 (− 1.5, 1.7).883
Sedentary
 Leisure screen behaviours (hrs/day)831−0.2 (− 0.3, − 0.2)<.001826−0.3 (− 0.4, − 0.3)<.001772−0.1 (− 0.2, − 0.1)<.001
 Total sedentary behaviours (hrs/day)831− 0.1 (− 0.2, − 0.1)<.001826−0.2 (− 0.3, − 0.2)<.001772−0.1 (− 0.1, − 0.06)<.001
 Meeting screen guidelines8315.8 (3.6, 8.0)<.0018267.9 (4.1, 11.6)<.0017723.8 (1.8, 5.8)<.001
Meeting at least 2/3 guidelines (%)8332.3 (0.5, 4.0).0108283.4 (0.5, 6.4).0217741.6 (0.05, 3.1).043
  1. a General use e.g. visiting websites, online shopping, downloading music