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Table 4 Adjusted mean levels of IOP and Ht by number of cigarettes consumed per day

From: Association of smoking with intraocular pressure in middle-aged and older Japanese residents

Number of cigarettes per day

Number (%) of subjects

Mean (±SE) IOP (mmHg)

Mean (±SE) Ht (%)

P value based on F value

P value for trend

IOP

Ht

IOP

Ht

Men

 0

484 (58.4)

13.8 ± 0.1

43.5 ± 0.2

    

 1–20

213 (25.7)

14.1 ± 0.2

44.1 ± 0.2

0.01

<0.01

0.04

<0.01

 ≥21

132 (15.9)

14.4 ± 0.3

44.7 ± 0.3

    

Women

 0

244 (85.9)

13.6 ± 0.2

39.1 ± 0.2

    

 1–20

31 (10.9)

14.0 ± 0.5

39.6 ± 0.6

0.12

0.24

0.39

0.04

 ≥21

9 (3.2)

13.7 ± 1.1

41.2 ± 1.2

    
  1. IOP intraocular pressure, Ht hematocrit
  2. Mean IOP and Ht levels were adjusted for age, systolic blood pressure, body mass index, alcohol consumption (never or seldom: 0; several times/month: 1; several times/week: 2; everyday: 3), and regular exercise (no = 0; yes = 1)