Skip to main content

Table 1 Item description and scaling properties of the questionnaires extracted from the validation phase (26 item version) and from the replication phase

From: Construction of a questionnaire measuring outpatients' opinion of quality of hospital consultation departments

  Intermediate questionnaire 26-items retained at the and of the first validation phase (first study, n = 1007) Final questionnaire 27-item questionnaire tested at the replication phase (second study, n = 248)
Title of the scales Consultation with the doctor Appointment making Reception Waiting time & facilities Overall scale Consultation with the doctor Appoint-ment making Reception & facilities Waiting time Overall scale
Items properties           
# of items in the scale 13 6 3 4 26 13 6 5 3 27
# of questionnaires with at least 1/2 of items completed (1) 996 931 1004 1001 1003 235 248 247 244 248
# of items with 'non response' ≥ 20% 0 0 0 0 0 0 0 0 0 0
# of item with 'does not apply' response ≥ 20% 0 2 0 0 2 1 0 0 0 1
# of items with ceiling effect ≥ 50% (≥ 60%) 13 (12) 6 (4) 3 (2) 0 (0) 22 (18) 12 (4) 1 (1) 2 (0) 0 (0) 15 (5)
# of items floor effect ≥ 50% 0 0 0 0   0 0 0 0 0
range of Weighted kappa (# of items with kappa ≥ 0.60) 0.14–0.83 (10) 0.46–0.77 (3) 0.45–0.78 (1) 0.68–0.82 (4) 0.14–0.82 (18) - - - -  
Scaling properties           
Mean score (± sd) 85.1 (17.2) 83.2 (19.9) 88.0 (14.5) 69.6 (24.9) 82.7 (13.7) 84.1 (17.2) 80.6 (18.5) 75.3 (18.3) 61.3 (19.6) 78.9 (15.3)
Ceiling / floor effect (%) 26.2 / 0.10 32.2 / 0.2 38.5 / 0.1 16.2 / 1.1 4.2 / 0.1 25.8 / 0.4 24.7 / 0.4 13.7 / 0.5 19.0 / 4.9 4.4 / 0.4
Skewness value /SE -3.00 -2.09 -3.5 -0.86 -2.67 -0.98 -0.83 -0.58 -0.20 -0.76
Range of interscale correlations 0.33–0.35 0.34–0.37 0.35–0.40 0.33–0.40 - 0.46–0.51 0.51–0.59 0.42–0.49 0.42–0.53 -
# of items with own scale correlation ≥ 0.40 (3) 12 6 2 4 - 13 6 5 3 -
# of items with own scale (3) correlation greater than with other scale 13 6 3 4 - 13 6 4 3 -
Cronbach alpha coefficient 0.85 0.82 0.69 0.77 0.88 0.94 0.87 0.79 0.89 0.94
Intraclass coefficient [IC95%] 0.69 [0.49–0.83] 0.84 [0.71–0.91] 0.86 [0.75–0.92] 0.83 [0.71–0.91] 0.90 [0.81–0.94] - - - -  
  1. (1) Including non response and 'does not apply' response' (2) From the final principal component factor analysis (3) Corrected for overlap
Back to article page

Health and Quality of Life Outcomes

ISSN: 1477-7525

Contact us