Background
Aim
Methods
Study population and design
Design
Sampling
Data collection
Ethical approval
Instruments
Socio-demographic data questionnaire
The children’s depression inventory (CDI)
Data analysis
Results
Demographic characteristics of the sample
Scores in the CDI scale and subscales
CDI scale & subscales | Minimum value | Maximum value | Mean value | Standard deviation | Standard error |
---|---|---|---|---|---|
CDI entire scale (27 items SR: 0–54) | 0.00 | 34.00 | 9.7 | 6.8 | 0.1 |
Depressive mood subscale (6 items, SR: 0–12) | 0.00 | 10.00 | 2.34 | 2.1 | 0.1 |
Inter-personal difficulties subscale (4 items, SR: 0–8) | 0.00 | 6.00 | 0.95 | 1.0 | 0.1 |
Ineffectiveness subscale (4 items, SR: 0–8) | 0.00 | 7.00 | 1.60 | 1.5 | 0.1 |
Anhedonia subscale (8 items, SR: 0–12) | 0.00 | 13.00 | 3.01 | 2.5 | 0.1 |
Negative self esteem subscale (5 items, SR: 0–10) | 0.00 | 8.00 | 1.84 | 1.7 | 0.1 |
Frequency of clinically relevant depressive symptoms (CDI ≥ 19) and associations with gender and ethnicity
Total sample | Children reporting non-clinically relevant depressive symptoms | Children reporting clinically relevant depressive symptoms | X2
| DF | p value | ||||
---|---|---|---|---|---|---|---|---|---|
N | % | N | % | Ν | % | ||||
Gender
| 2.72 | 1 | 0.099 | ||||||
Male | 217 | 49.4 | 200 | 92.2 | 17 | 7.8 | |||
Female | 222 | 50.6 | 194 | 87.4 | 28 | 12.6 | |||
Ethnicity
| 2.21 | 1 | 0.13 | ||||||
Cypriot | 390 | 88.8 | 353 | 90.5 | 37 | 9.5 | |||
Other | 49 | 11.2 | 41 | 83.7 | 8 | 16.3 |
Mean scores in the entire CDI scale and each CDI subscale in the group of respondents reporting clinically relevant depressive symptoms in the entire CDI scale (CDI ≥ 19) (n = 45)
CDI subscales | Minimum value | Maximum value | Mean value | Standard deviation | Standard error |
---|---|---|---|---|---|
Depressive mood subscale (6 items, SR: 0–12) | 1.00 | 10.00 | 6.35 | 1.73 | 0.1 |
Inter-personal difficulties subscale (4 items, SR: 0–8) | 0.00 | 6.00 | 1.95 | 1.38 | 0.1 |
Ineffectiveness subscale (4 items, SR: 0–8) | 0.00 | 7.00 | 3.75 | 1.63 | 0.1 |
Anhedonia subscale (8 items, SR: 0–12) | 3.00 | 13.00 | 7.40 | 2.55 | 0.1 |
Negative self-esteem subscale (5 items, SR: 0–10) | 1.00 | 8.00 | 4.91 | 1.64 | 0.1 |
Subscales | Gender | N | Mean value | Standard deviation | p value |
---|---|---|---|---|---|
Depressive mood (6 items, SR: 0–12) | Boy | 17 | 6.76 | 2.10 | 0.038 |
Girl
| 28 | 8.1 | 1.44 | ||
Inter-personal difficulties (4 items, SR: 0–8) |
Boy
| 17 | 2.41 | 1.22 | 0.042 |
Girl | 28 | 1.67 | 1.41 | ||
Ineffectiveness (4 items, SR: 0–8) |
Boy
| 17 | 4.41 | 1.62 | 0.034 |
Girl | 28 | 3.35 | 1.54 | ||
Anhedonia (8 items, SR: 0–16) | Boy | 17 | 6.70 | 2.64 | 0.022 |
Girl
| 28 | 7.82 | 2.45 | ||
Negative self-esteem (5 items, SR: 0–10) | Boy | 17 | 4.70 | 1.82 | 0.029 |
Girl
| 28 | 6.03 | 1.55 |
Metric properties of the child depression inventory (CDI)
CDI subscales | Cronbach’s alpha | Item-to-scale correlation within each subscale (Pearson’s r) | Subscale-to-scale correlation (Pearson’s r) |
---|---|---|---|
Depressive mood | 0.64 | 0.58–0.66* (0.52–0.61)* | 0.84* (0.68*) |
Inter-personal difficulties | 0.32 | 0.17–0.33* (0.13–0.29)* | 0.50* (0.36*) |
Ineffectiveness | 0.54 | 0.43–0.50* (0.44–0.46)* | 0.64* (0.47*) |
Anhedonia | 0.64 | 0.59–0.64* (0.53–0.60)* | 0.84* (0.64*) |
Negative self-esteem | 0.62 | 0.48–0.62* (0.45–0.5)* | 0.78* (0.63*) |
Items of the CDI scale | Component | ||||
---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | |
Item 1 (sadness) |
0.641
| 0.190 | 0.195 | ||
Item 2 (pessimism) | 0.256 |
0.526
| 0.190 | ||
Item 3 (self-inefficacy) | 0.284 |
0.482
| 0.171 | ||
Item 4 (anhedonia) | 0.175 | 0.245 |
0.391
| ||
Item 5 (negative self-concept) | 0.174 | 0.279 |
0.531
| ||
Item 6 (worryingness) |
0.625
| 0.193 | |||
Item 7 (self-acceptance | 0.378 |
0.591
| |||
Item 8 (self-blaming) |
0.123
| 0.467 | 0.270 | 0.339 | |
Item 9 (suicidal thinking) | 0.263 |
0.255
| 0.177 | 0.128 | 0.229 |
Item 10 (tearfulness) |
0.577
| 0.293 | |||
Item 11 (irritability) |
0.506
| 0.396 | |||
Item 12 (socializing) | 0.229 | 0.210 |
0.002
| ||
Item 13 (indecisiveness) |
0.125
| 0.189 | |||
Item 14 (self-image) | 0.216 |
0.670
| 0.185 | −0.139 | |
Item 15 motivation) | 0.173 |
0.663
| |||
Item 16 (sleep) | 0.488 |
0.187
| 0.330 | ||
Item 17 (tiredness) | 0.493 | 0.208 |
0.193
| −0.136 | 0.266 |
Item 18 (appetite) | 0.515 | −0.137 |
0.220
| 0.163 | |
Item 19 (hypochondriasis) | 0.451 |
0.165
| |||
Item 20 (loneliness) | 0.325 | 0.331 |
0.547
| ||
Item 21 (school enjoyment) | 0.125 |
0.543
| 0.235 | ||
Item 22 (friendship) | 0.254 |
0.697
| |||
Item 23 (school performance) | 0.244 |
0.677
| |||
Item 24 (self-esteem) | 0.531 |
0.416
| |||
Item 25 (feeling loved) |
0.569
| 0.380 | |||
Item 26 (submissiveness) |
0.825
| ||||
Item 27 (inter-personal difficulties) | 0.607 | 0.186 |
0.277
|
CDI items | Depressive-related state of each item | Item-to- scale correlation (Pearson’s r) |
---|---|---|
Item 1 | Sadness | 0.56* (0.51*) |
Item 2 | Pessimism | 0.51* (0.45*) |
Item 3 | Self-inefficacy | 0.42* (0.37*) |
Item 4 | Anhedonia | 0.43* (0.37*) |
Item 5 | Negative self-concept | 0.32* (0.27*) |
Item 6 | Worryingness | 0.53* (0.46*) |
Item 7 | Self-acceptance | 0.57* (0.52*) |
Item 8 | Self-blaming | 0.46* (0.39*) |
Item 9 | Suicidal thinking | 0.40* (0.35*) |
Item 10 | Tearfulness | 0.52* (0.47*) |
Item 11 | Irritability | 0.60* (0.53*) |
Item 12 | Socializing | 0.29* (0.23*) |
Item 13 | Indecisiveness | 0.34* (0.26*) |
Item 14 | Self-image | 0.53* (0.46*) |
Item 15 | Motivation | 0.38* (0.27*) |
Item 16 | Sleep | 0.50* (0.43*) |
Item 17 | Tiredness | 0.48* (0.40*) |
Item 18 | Appetite | 0.45* (0.36*) |
Item 19 | Hypochondriasis | 0.35* (0.27*) |
Item 20 | Loneliness | 0.55* (0.50*) |
Item 21 | School enjoyment | 0.39* (0.33*) |
Item 22 | Friendship | 0.44* (0.39*) |
Item 23 | School performance | 0.43* (0.37*) |
Item 24 | Self-esteem | 0.48* 0.41*) |
Item 25 | Feeling loved | 0.53* (0.47*) |
Item 26 | Submissiveness | 0.18* (0.10*) |
Item 27 | Inter-personal difficulties | 0.40* (0.35*) |