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Table 3 Demographic characteristics of women with GDM that participated in psychometric testing steps

From: Quality of life questionnaire for women with gestational diabetes mellitus (GDMQ-36): development and psychometric properties

CharacteristicsFace validity (n = 10)Factor analysis
And
Known group validity
(n = 165)
Convergence validity
(n = 85)
Internal consistency
(n = 30)
Stability
(n = 15)
Age (years)
 Mean (SD)29.6 (4.69)31.79 (5.30)29.87 (5.33)28.20 (5.88)28.40 (5.91)
 Range23–3819–4419–4019–3920–38
Gestational age (weeks)
 Mean (SD)30.80 (3.76)31.00 (3.52)30.40 (3.74)31.33 (3.72)31.2 (3.70)
 Range27–3626–3926–3926–3726–36
Level of education
 Elementary6 (60%)67 (40.6%)21 (24.7%)12 (40%)7 (46%)
 High school2 (20%)60 (36.4%)36 (42.4%)10 (33.3%)5 (33%)
 College/university2 (20%)31 (18.8%)23 (27.1%)8 (26.7%)3 (20%)
 postgraduate0 (0%)7 (4.2%)5 (5.9%)0 (0%)0 (0%)
Employment status
 Employment8 (80%)18 (10.9%)12 (14.1%)4 (13.3%)2 (13.3%)
 Housekeeper2 (20%)147 (89.1%)73 (85.9%)26 (86.7%)13 (86.7%)
Economic status
 Poor4 (40%)64 (38.8%)23 (27.1%)12 (40%)6 (40%)
 Moderate5 (50%)79 (47.9%)48 (56.5%)15 (50%)9 (60%)
 good1 (10%)22 (13.3%)14 (16.5%)3 (10%)0 (0%)
Gravida
 nuliparus4 (40%)49 (29.7%)37 (43.5%)10 (33.3%)2 (13.3%)
 multiparus6 (60%)116 (70.3%)48 (56.5%)20 (66.6%)13 (86.7%)
Hospitalization
 Yes3 (30%)63 (38.2%)28 (32.9%)11 (36.7%)4 (26.7%)
 no7 (70%)102 (61.8%)57 (67.1%)19 (63.3%)11 (73.3%)
Treatment
 Diet7 (70%)79 (47.9%)47 (55.3%)17 (56.7%)11 (73.3%)
 Medical treatment3 (30%)86 (52.1%)38 (44.7%)13 (43.3%)4 (26.7%)