Table 2 Descriptive statistics for the four groups for analysis

From: Methylation age acceleration does not predict mortality in schizophrenia

 

SCZ-died

SCZ-alive

Control-died

Control-alive

N

126

63

127

62

Males, N (%)

76 (60.3)

38 (60.3)

71 (55.9)

40 (63.5)

Age at sampling, years

58 (53, 61)

56 (51, 60)

68 (61, 74)

57.5 (51, 61)

Age at death, years

62.3 (56.3, 65)

N/A

71.2 (65.4, 78.4)

N/A

Follow-up timea

3.95 (2.9, 5.5)

6(5, 6)

4.1 (2.8, 5.4)

5(5, 6)

Inpatient hospitalizationsb

13.5 (7.3, 24)

13 (7, 25.5)

0

0

Outpatient hospitalizationsb

9.5 (5, 16.8)

12(5, 19)

0

0

Antipsychotic prescriptions

140 (40.5, 247)

205 (90.5, 341)

0

0

Smoking score

6.2 (1.1, 9.6)

2.3 (−1.8, 7.1)

−0.74 (−3.5, 3.4)

−2.3 (−4.6, 0.2)

Hannum

    

 mAge

53.7 (49.8, 56.7)

51.2 (48.4, 56.1)

60.7 (55.3, 65.9)

51.7 (49.1, 56.7)

 mAge acceleration

−0.17 (−2.5, 2.1)

−0.40 (−2.3, 1.1)

0.04 (−2.2, 2.2)

0.20 (−2.8, 2.5)

Horvath

    

 mAge

57.1 (52.6, 61.5)

55.2 (51.9, 58.6)

64.6 (58.5, 69.9)

57.2 (53.4, 60.8)

 mAge acceleration

0.31 (−3.2, 2.9)

−0.27 (−2.9, 1.5)

−0.35 (−2.8, 2.5)

0.29 (−1.9, 2.7)

Levine

    

 mAge

50.6 (45.9, 55.4)

47.8 (43.7, 53.3)

58.9 (52.4, 64.9)

48.2 (43.2, 52.4)

 mAge acceleration

0.72 (−2.6, 3.6)

−0.88 (−3.4, 2.5)

0.04 (−3.5, 3.5)

−1.5 (−4.5, 3.1)

  1. For continuous variables, the median and interquartile range are reported; for categorical variables, the number of individuals and percent are reported. For the methylation age (mAge), the value is reported in years aFor those who died, time between sampling and death; for alive, this is time between sampling and last follow-up bHospitalizations with discharge diagnoses of SCZ or schizoaffective disorder. N/A not applicable