Table 3 ANCOVA analysis to compare SRI 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

0.8245

64.6 (15.9)

64.2 (17.5)

60.3 (18.0)

52.9 (3.6)

diet

158

Very good

Good

Poor

Very poor

0.1441

64.1 (22.3)

66.9 (15.4)

59.6 (18.3)

60.5 (12.9)

nap

158

No

Yes

 < 0.001

70.8 (12.4)

59.0 (18.2)

napf

97

1 per week

2–3 per week

4–6 per week

Daily

0.0017

70.3 (11.4)

60.2 (16.3)

54.6 (15.8)

42.6 (22.5)

exercise

158

No

Yes

0.0854

62.4 (15.7)

65.1 (18.7)

exercise_freq

73

1 per week

2–3 per week

4–6 per week

Daily

0.7714

67.0 (12.6)

65.2 (16.7)

60.5 (26.6)

68.7 (12.7)

  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 wake after sleep onset, per-subject sleep onset latency, 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.
  3. Statistically significant values (p-value < 0.05) are in bold.
Back to article page