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Table 1 Assessments, data collection and analyses of the two studies

From: The positive mental health instrument: development and validation of a culturally relevant scale in a multi-ethnic asian population

  Stage 1 Stage 2
Intent Item reduction Validation
Time line April 2010 - Sep 2010 Dec 2010 - Feb 2011
Sociodemographic data
(age, gender, ethnicity, education, marital and employment status)
PMH instrument 182 candidate item scale,
4 point Likert style response scale (1- not at all like me, 2 - some what like me, 3 - moderately like me, 4- very much like me)
47-item scale,
6 point Likert style response scale (1- not at all like me, 2 - very slightly like me, 3 - slightly like me, 4- moderately like me, 5 - very much like me and 6- exactly like me)
Other measures General Health questionnaire RSA
  EQ5D MSPSS
  General happiness item Brief Cope
  General health item PGIS
   DSES
   SWEMWBS
   SWLS
   General happiness item
   General health item
   EQ5D VAS
   Healthy days measure
   PHQ -8
   GAD -7
   SDS
Analyses Missing data, floor and ceiling effect Missing data, floor and ceiling effect
  EFA, CFA CFA
  IRT-DIF IRT-DIF
  Internal consistency Internal consistency, Criterion validity
  1. CFA: Confirmatory Factor Analysis; DSES:Daily Spirituality Experience Scale; EFA:Exploratory Factor Analysis;
  2. EQ5D VAS: Euro-Quality of Life Scale Visual Analogue Scale; GAD-7:General Anxiety Disorder Scale;
  3. IRT- DIF:Item response theory and Differential item functioning; MSPSS:Multi-dimensional Scale of Perceived Social Support; PGIS:Personal Growth Initiative Scale; PHQ-8:Patient Health Questionnaire; RSA:Resilience Scale for Adults
  4. SDS: Sheehan Disability Scale; SWEMWBS:Short Warwick- Edinburg Mental Well-being Scale; SWLS: Satisfaction with Life Scale