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Table 1 Socio-demographic and clinical characteristics of the sample

From: Association between sleep quality and domains of quality of life amongst patients with first episode psychosis

 Frequency, NPercent
Age20 and below6924.6
21–3014250.7
31–406924.6
GenderMale14250.7
Female13849.3
Ethnic GroupChinese20071.4
Malay4114.6
Indian258.9
Other145.0
Marital StatusEver Married4014.3
Never Married23985.4
ReligionChristianity7025.0
Buddhism7426.4
Hinduism145.0
Islam5620.0
Taoism62.1
Others6021.4
Education‘O’/‘N’ Level and Below7727.5
‘A’ Level/NITEC/Higher NITEC/Polytechnic Diploma/Other Diploma & Professional Qualification15254.3
University5118.2
Work StatusStudent/Homemaker/Housewife7827.9
Working/National Service11842.1
Unemployed7827.9
SCID DiagnosisSchizophrenia and related psychosis21275.7
Mood disorder with psychotic symptoms238.2
Smoking HabitNever smoked16759.6
Current smoker9533.9
Social and ex-smoker176.1
AUDIT scoreNo-hazardous use (score < 8)24487.1
Hazardous use (score ≥ 8)3612.9
PSQI scorePoor sleep quality (score > 5)17662.9
Normal sleep quality (score ≤ 5)9835.0
Taking FGAsYes269.3
No25490.7
Taking SGAsYes23182.5
No4917.5
Taking AD/MSYes8831.4
No19268.6
  MeanSD
Baseline PANSSPositive21.895.994
Negative15.768.733
GPS38.1611.346
Baseline GAFTotal44.3012.062
DUP since onset of symptoms (in months)13.5521.685
Daily dosage converted to CPZ279.0325216.7946
PSQIComponent 1: Subjective Sleep Quality1.110.839
Component 2: Sleep Latency1.450.995
Component 3: Sleep Duration0.811.119
Component 4: Habitual Sleep Efficiency0.691.040
Component 5: Sleep Disturbances1.340.751
Component 6: Use of Sleeping Medication1.141.316
Component 7: Daytime Dysfunction1.240.972
Global PSQI Score7.814.429
WHOQOL-BREFPhysical health13.892.742
Psychological12.133.148
Social Relationship12.833.058
Environment13.402.775
  1. Note: 1 missing response for marital status (0.4%); 6 missing response for work status (2.1%); 45 missing response for SCID diagnosis (16.1%); 1 missing response for smoking habit (0.4%); 6 missing response PSQI (2.1%)
  2. AD anti-depressant, AUDIT alcohol use disorder identification test, CPZ chlorpromazine, DUP duration of untreated psychosis, FGAs first generation antipsychotics, GAF general assessment of functioning, GPS general psychopathology, MS Mood Stabilizer, PANSS positive and negative syndrome scale, PSQI Pittsburg sleep quality index, SCID structured clinical interview for diagnostic and statistical manual of mental diseases, SGAs Second generation antipsychotics, WHOQOL-BREF World Health Organization Quality of Life - BREF