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. Author manuscript; available in PMC: 2018 Apr 27.
Published in final edited form as: Int Arch Occup Environ Health. 2016 Jul 1;89(7):1111–1125. doi: 10.1007/s00420-016-1151-5

Table 3.

Distributions of psychosocial working conditions, systolic and diastolic blood pressures, and hypertension in (A) 295 male firefighters who worked at fire stations and were not taking anti-hypertensive medications and (B) 22 male firefighters who worked at fire station and were taking anti-hypertensive medications

Psychosocial working condition Subcategory N (%) SBP (mmHg)
DBP (mmHg)
Hypertension (%)
M (SD) Pairwise comparison (p value) M (SD) Pairwise comparison (p value)
(A) 295 male firefighters
0–6   11 (3.7) 114.5 (8.6) 0.069 77.0 (5.4) 0.062 0.0
Number of 24-h shifts in the past month 8–11 (reference)   25 (8.5) 107.1 (6.3) Ref. 72.0 (6.1) Ref. 0.0
12–21 259 (87.8) 111.7 (11.7) 0.050 75.8 (7.5) 0.014 4.6
ANOVA test: p value 0.095 0.038
 0–6   11 (3.7) 114.5 (8.6) 0.070 77.0 (5.4) 0.060 0.0
 8–11   25 (8.5) 107.9 (6.3) Ref. 72.0 (6.1) Ref. 0.0
 12   63 (21.4) 110.9 (13.6) 0.155 75.8 (8.4) 0.029 4.8
 13   36 (12.2) 110.8 (10.9) 0.215 74.8 (8.0) 0.150 5.6
 14   71 (24.1) 112.8 (12.3) 0.031 76.2 (7.0) 0.015 5.6
 15   36 (12.2) 111.4 (10.8) 0.148 73.6 (6.7) 0.398 2.8
 16   34 (11.5) 113.5 (11.0) 0.033 78.7 (8.3) 0.001 5.9
 17–21   19 (6.4) 110.1 (7.5) 0.382 75.8 (4.3) 0.090 0.0
ANOVA test: p value 0.414 0.026
More demanding over the past years Strongly disagree/disagree   93 (31.5) 109.6 (10.1) Ref. 74.8 (6.6) Ref. 4.3
Agree/strongly agree 202 (68.5) 112.3 (11.8) 0.059 75.9 (7.8) 0.225 4.0
(B) 22 male firefighters
Number of 24-h shifts in the past month 0–6     1 (4.5) 121.0 (NA) 0.826 80.0 (NA) 0.978 100
8–11 (reference)     4 (18.2) 117.5 (7.5) Ref. 80.3 (12.7) Ref. 100
12–21   17 (77.3) 121.4 (15.0) 0.622 82.1 (7.0) 0.694 100
ANOVA test: p value 0.883 0.905
More demanding over the past years Strongly disagree/disagree     7 (31.8) 121.0 (8.1) Ref. 80.9 (8.4) Ref. 100
Agree/strongly agree   15 (68.2) 120.5 (15.6) 0.942 82.0 (7.8) 0.757 100

ANOVA analysis of variance, NA not applicable, Ref. the reference group for pairwise comparisons