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Table 2 Associations between Length of exposure to an Urban environment and Psychosis Phenotypes (N = 47,004)

From: Impact of urban birth and upbringing on expression of psychosis in a Chinese undergraduate population

 

Psychoticism

n = 1961 (4.2%)

Paranoia

n = 2572 (5.5%)

Schizotypal symptoms

n = 867 (1.8%)a

Nuclear syndrome

n = 116 (0.2%)

Diagnosed Schizophrenia

n = 63 (0.1%)

N (%)

OR

N (%)

OR (95%CI)

N (%)

OR (95%CI)

N (%)

OR (95%CI)

N (%)

OR (95%CI)

Urban Exposure

 Total in 15 yearsb

n = 47,004 (100%)

3.6 (6.0)

1.00 (0.99–1.01)

3.9 (6.2)

1.01 (1.00–1.02)

4.4 (6.5)

1.02 (1.01–1.03)***

4.0 (6.4)

1.01 (0.98–1.04)

5.5 (6.8)

1.05 (1.02–1.09)**

 0 years (Ref)

n = 33,550 (71.4%)

1383 (70.5)

Ref (1)

1763 (68.5)

Ref (1)

557 (64.2)

Ref (1)

81 (69.8)

0.50 (0.15–1.63)

36 (57.2)

Ref (1)

 1–5 years

n = 1958 (4.2%)

82 (4.2)

0.82 (0.63–1.06)

105 (4.1)

0.86 (0.69–1.08)

44 (5.1)

1.11 (0.79–1.56)

3 (2.6)

0.61 (0.19–1.98)

1 (1.6)

0.43 (0.06–3.18)

 6–10 years

n = 1598 (3.4%)

81 (4.1)

1.05 (0.80–1.37)

116 (4.5)

1.26 (1.01–1.57)*

35 (4.1)

1.06 (0.73–1.55)

3 (2.6)

1.30 (0.84–1.24)

4 (6.3)

2.46 (0.85–7.12)

 11–15 years

n = 9898 (21.0%)

415 (21.2)

0.99 (0.87–1.13)

588 (22.9)

1.15 (1.03–1.28)*

231 (26.6)

1.44 (1.22–1.71)***

29 (25.0)

1.02 (0.84–1.24)

22 (34.9)

2.35 (1.36–4.07)**

  1. Adjusted for age, sex and PHQ-9 score
  2. For 1st five years also adjust for total years in 2nd and 3rd; for 2nd adjust for total in 1st and 3rd; for 3rd adjust for total in 1st and 2nd
  3. aNuclear syndrome excluded from analysis
  4. bmean (SD) were used to describe this variable
  5. *P < 0.05, **p < 0.01, ***p < 0.001