Table 5 ANCOVA analysis to compare SJL values among groups of categorical questionnaire-derived variables.

From: Sleep irregularity is associated with night-time technology, dysfunctional sleep beliefs and subjective sleep parameters amongst female university students

 

N

Group

p-value

srh4

158

Very good

Good

Poor

Very poor

0.1818

1.5 (1.2)

1.6 (1.3)

1.9 (0.7)

2.1 (1.8)

diet

158

Very good

Good

Poor

Very poor

0.1531

1.3 (1.1)

1.6 (1.1)

1.7 (1.5)

1.9 (0.9)

nap

158

No

Yes

0.5911

1.6 (1.1)

1.7 (1.3)

napf

97

1 per week

2–3 per week

4–6 per week

Daily

0.0760

1.8 (0.8)

1.4 (1.3)

2.0 (1.4)

2.3 (1.7)

exercise

158

No

Yes

0.2361

1.8 (1.3)

1.5 (1.2)

exercise_freq

73

1 per week

2–3 per week

4–6 per week

Daily

0.4858

1.7 (0.6)

1.6 (1.1)

1.5 (1.5)

1.3 (1.2)

  1. N = number of subjects with information of the questionnaire-derived variable outcome (i.e., not missing value). Adjusting for the following covariates: age, body mass index,season of the year in which the actigraphy recording was collected, number of recording days, number of free and workdays in the recording,  per-subject total sleep time, per-subject sleep onset, latencyper-subject wake after sleep onset, and per-subject number of awakenings.
  2. srh4, self-rated health; diet, self-reported diet; nap, self-reported nap; napf, self-reported nap frequency; exercise, self-reported exercise; exercise_freq, self-reported exercise frequency.
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