Sociodemographic Characteristics and Prevalence of Environmental Risk Factors for the Total Cohort and Stratified for Adolescents with and without Psychotic Experiences and Psychotic Symptoms at Age 18
| Total cohort (n = 801) . | PE/PS group (n = 172) . | No PE/PS group (n = 629) . | |
|---|---|---|---|
| Age at baseline, years (M, SD) | 14.94 (0.91) | 14.90 (0.96) | 14.94 (0.89) |
| Age at follow-up, years (M, SD) | 18.07 (0.85) | 17.99 (0.83) | 18.09 (0.86) |
| Sex female (n, %) | 429 (53.6) | 92 (53.5) | 337 (53.6) |
| Educational level at age 18 (n, %) | |||
| Low | 414 (52.8) | 104 (62.3) | 310 (50.2) |
| Medium | 211 (26.9) | 39 (23.4) | 172 (27.9) |
| High | 159 (20.3) | 24 (14.4) | 135 (21.9) |
| Low socioeconomic status (n, %) | 116 (16.0) | 29 (19.3) | 87 (15.1) |
| Risk factors (n, %) | |||
| Winter birth | 166 (20.7) | 33 (19.2) | 133 (21.1) |
| Gestational age < 37 weeks | 49 (8.6) | 7 (6.4) | 42 (9.1) |
| Birth weight < 2500 gram | 40 (7.4) | 9 (8.5) | 31 (7.2) |
| Ethnic minority status | 140 (17.5) | 42 (24.6) | 98 (15.6) |
| Urban living area | 630 (78.7) | 138 (80.2) | 492 (78.2) |
| Used cannabis | 53 (6.6) | 11 (6.4) | 42 (6.7) |
| Has been bullied | 82 (11.2) | 32 (20.5) | 50 (8.7) |
| Emotional abuse | 167 (22.3) | 48 (29.6) | 119 (20.3) |
| Physical abuse | 162 (22.9) | 42 (27.8) | 120 (21.6) |
| Sexual abuse | 40 (5.6) | 10 (6.6) | 30 (5.3) |
| Paternal age > 35 years | 209 (40.4) | 37 (37) | 172 (41.2) |
| Parental divorce | 177 (24.2) | 50 (31.8) | 127 (22.2) |
| Parental severe mental illness | 220 (30.4) | 63 (40.1) | 157 (27.7) |
| Parental death | 6 (0.8) | 3 (1.9) | 3 (0.5) |
| Total cohort (n = 801) . | PE/PS group (n = 172) . | No PE/PS group (n = 629) . | |
|---|---|---|---|
| Age at baseline, years (M, SD) | 14.94 (0.91) | 14.90 (0.96) | 14.94 (0.89) |
| Age at follow-up, years (M, SD) | 18.07 (0.85) | 17.99 (0.83) | 18.09 (0.86) |
| Sex female (n, %) | 429 (53.6) | 92 (53.5) | 337 (53.6) |
| Educational level at age 18 (n, %) | |||
| Low | 414 (52.8) | 104 (62.3) | 310 (50.2) |
| Medium | 211 (26.9) | 39 (23.4) | 172 (27.9) |
| High | 159 (20.3) | 24 (14.4) | 135 (21.9) |
| Low socioeconomic status (n, %) | 116 (16.0) | 29 (19.3) | 87 (15.1) |
| Risk factors (n, %) | |||
| Winter birth | 166 (20.7) | 33 (19.2) | 133 (21.1) |
| Gestational age < 37 weeks | 49 (8.6) | 7 (6.4) | 42 (9.1) |
| Birth weight < 2500 gram | 40 (7.4) | 9 (8.5) | 31 (7.2) |
| Ethnic minority status | 140 (17.5) | 42 (24.6) | 98 (15.6) |
| Urban living area | 630 (78.7) | 138 (80.2) | 492 (78.2) |
| Used cannabis | 53 (6.6) | 11 (6.4) | 42 (6.7) |
| Has been bullied | 82 (11.2) | 32 (20.5) | 50 (8.7) |
| Emotional abuse | 167 (22.3) | 48 (29.6) | 119 (20.3) |
| Physical abuse | 162 (22.9) | 42 (27.8) | 120 (21.6) |
| Sexual abuse | 40 (5.6) | 10 (6.6) | 30 (5.3) |
| Paternal age > 35 years | 209 (40.4) | 37 (37) | 172 (41.2) |
| Parental divorce | 177 (24.2) | 50 (31.8) | 127 (22.2) |
| Parental severe mental illness | 220 (30.4) | 63 (40.1) | 157 (27.7) |
| Parental death | 6 (0.8) | 3 (1.9) | 3 (0.5) |
Educational level was missing for 17 adolescents. Number of missings per risk factor: gestational age (229), birth weight (262), ethnic background (3), SES (76), cannabis use (3), bullying (72), emotional abuse (53), physical abuse (95), sexual abuse (85), paternal age (284), parental divorce (71), parental severe mental illness (78), parental death (70).
Sociodemographic Characteristics and Prevalence of Environmental Risk Factors for the Total Cohort and Stratified for Adolescents with and without Psychotic Experiences and Psychotic Symptoms at Age 18
| Total cohort (n = 801) . | PE/PS group (n = 172) . | No PE/PS group (n = 629) . | |
|---|---|---|---|
| Age at baseline, years (M, SD) | 14.94 (0.91) | 14.90 (0.96) | 14.94 (0.89) |
| Age at follow-up, years (M, SD) | 18.07 (0.85) | 17.99 (0.83) | 18.09 (0.86) |
| Sex female (n, %) | 429 (53.6) | 92 (53.5) | 337 (53.6) |
| Educational level at age 18 (n, %) | |||
| Low | 414 (52.8) | 104 (62.3) | 310 (50.2) |
| Medium | 211 (26.9) | 39 (23.4) | 172 (27.9) |
| High | 159 (20.3) | 24 (14.4) | 135 (21.9) |
| Low socioeconomic status (n, %) | 116 (16.0) | 29 (19.3) | 87 (15.1) |
| Risk factors (n, %) | |||
| Winter birth | 166 (20.7) | 33 (19.2) | 133 (21.1) |
| Gestational age < 37 weeks | 49 (8.6) | 7 (6.4) | 42 (9.1) |
| Birth weight < 2500 gram | 40 (7.4) | 9 (8.5) | 31 (7.2) |
| Ethnic minority status | 140 (17.5) | 42 (24.6) | 98 (15.6) |
| Urban living area | 630 (78.7) | 138 (80.2) | 492 (78.2) |
| Used cannabis | 53 (6.6) | 11 (6.4) | 42 (6.7) |
| Has been bullied | 82 (11.2) | 32 (20.5) | 50 (8.7) |
| Emotional abuse | 167 (22.3) | 48 (29.6) | 119 (20.3) |
| Physical abuse | 162 (22.9) | 42 (27.8) | 120 (21.6) |
| Sexual abuse | 40 (5.6) | 10 (6.6) | 30 (5.3) |
| Paternal age > 35 years | 209 (40.4) | 37 (37) | 172 (41.2) |
| Parental divorce | 177 (24.2) | 50 (31.8) | 127 (22.2) |
| Parental severe mental illness | 220 (30.4) | 63 (40.1) | 157 (27.7) |
| Parental death | 6 (0.8) | 3 (1.9) | 3 (0.5) |
| Total cohort (n = 801) . | PE/PS group (n = 172) . | No PE/PS group (n = 629) . | |
|---|---|---|---|
| Age at baseline, years (M, SD) | 14.94 (0.91) | 14.90 (0.96) | 14.94 (0.89) |
| Age at follow-up, years (M, SD) | 18.07 (0.85) | 17.99 (0.83) | 18.09 (0.86) |
| Sex female (n, %) | 429 (53.6) | 92 (53.5) | 337 (53.6) |
| Educational level at age 18 (n, %) | |||
| Low | 414 (52.8) | 104 (62.3) | 310 (50.2) |
| Medium | 211 (26.9) | 39 (23.4) | 172 (27.9) |
| High | 159 (20.3) | 24 (14.4) | 135 (21.9) |
| Low socioeconomic status (n, %) | 116 (16.0) | 29 (19.3) | 87 (15.1) |
| Risk factors (n, %) | |||
| Winter birth | 166 (20.7) | 33 (19.2) | 133 (21.1) |
| Gestational age < 37 weeks | 49 (8.6) | 7 (6.4) | 42 (9.1) |
| Birth weight < 2500 gram | 40 (7.4) | 9 (8.5) | 31 (7.2) |
| Ethnic minority status | 140 (17.5) | 42 (24.6) | 98 (15.6) |
| Urban living area | 630 (78.7) | 138 (80.2) | 492 (78.2) |
| Used cannabis | 53 (6.6) | 11 (6.4) | 42 (6.7) |
| Has been bullied | 82 (11.2) | 32 (20.5) | 50 (8.7) |
| Emotional abuse | 167 (22.3) | 48 (29.6) | 119 (20.3) |
| Physical abuse | 162 (22.9) | 42 (27.8) | 120 (21.6) |
| Sexual abuse | 40 (5.6) | 10 (6.6) | 30 (5.3) |
| Paternal age > 35 years | 209 (40.4) | 37 (37) | 172 (41.2) |
| Parental divorce | 177 (24.2) | 50 (31.8) | 127 (22.2) |
| Parental severe mental illness | 220 (30.4) | 63 (40.1) | 157 (27.7) |
| Parental death | 6 (0.8) | 3 (1.9) | 3 (0.5) |
Educational level was missing for 17 adolescents. Number of missings per risk factor: gestational age (229), birth weight (262), ethnic background (3), SES (76), cannabis use (3), bullying (72), emotional abuse (53), physical abuse (95), sexual abuse (85), paternal age (284), parental divorce (71), parental severe mental illness (78), parental death (70).
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