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. Author manuscript; available in PMC: 2015 Dec 1.
Published in final edited form as: Occup Environ Med. 2014 Mar 28;71(12):855–864. doi: 10.1136/oemed-2013-101801

Table 4.

Gender differences in reported tasks and time spent performing those tasks for those controls completing the assembly worker, machinist, health professional and janitor/housekeeper job modules. Analyses conducted for all who completed the module and for two defined job groups within a module.

Job Module Proportion Who Performed Task
Time Spent Performing Task
Job Group
(N)		 Female
(%)		 Male
(%)		 Female:
male
ratioa 		Chi-
square
p-value		 Female
Male
U test
p-
value
 Common Task(s) N
freq
> 0b 		AM
(hr/wk)		 Median
(hr/wk)		 IQR
(hr/wk)		 Range
(hr/wk)		 N
freq
> 0		 AM
(hr/wk)		 Median
(hr/wk)		 IQR
(hr/wk)		 Range
(hr/wk)
Assembly Worker
 All who completed modulec (♀=108, ♂=206)
  Degrease 24 22 1.08 0.73 26 10.5 6.3 1.4–16.0 0.2–40.0 43 6.4 2.7 0.9–5.0 <0.1–60.0 0.02
  Glue 21 24 0.85 0.47 20 14.7 10.0 3.1–22.4 0.1–40.0 47 15.8 5.0 1.0–36.2 <0.1–56.0 0.68
  Paint 9 16 0.58 0.09 9 7.9 0.4 0.2–10.0 <0.1–40.0 32 7.8 0.6 0.3–6.2 <0.1–56.0 0.65
   Production workers in product manufacturingd (♀=76, ♂=164)
    Degrease 25 22 1.14 0.60 19 9.8 6.3 1.7–16.0 0.3–39.8 33 6.7 3.0 1.0–6.0 <0.1–60.0 0.04
    Glue 16 22 0.73 0.29 11 12.6 4.0 2.0–24.8 0.1–40.0 33 18.4 10.0 1.0–40.0 <0.1–56.0 0.53
    Paint 7 16 0.42 0.05 4 0.2 0.1 0.1–0.3 <0.1–0.4 25 8.5 0.8 0.5–8.3 <0.1–56.0 -
     Fabricators/assemblers in transportation equipment manufacturinge (♀=23, ♂=95)
      Degrease 35 17 2.07 0.06 8 11.8 6.3 1.0–20.0 0.3–39.8 15 10.8 5.0 0.2–11.2 <0.1–60.0 0.58
      Glue 18 22 0.85 0.73 3 20.4 24.8 0.1–36.2 0.1–36.2 17 15.2 5.0 1.0–27.7 <0.1–56.0 -
      Paint 13 19 0.69 0.51 2 0.1 - <0.1, 0.1 16 8.4 0.7 0.5–9.2 0.1–56.0 -
Machinist
 All who completed modulec (♀=25, ♂=191)
  Degrease (♀=21, ♂=174)f 36 41 0.87 0.61 9 11.8 2.0 0.3–4.0 0.1–48 78 5.5 2.0 0.8–5.0 <0.1–60.0 0.86
  Weld or Cut 24 21 1.12 0.79 5 11.3 4.0 2.0–10.0 0.5–40.0 36 4.7 1.7 0.4–3.0 <0.1–60.0 0.12
  Solder 14 11 1.32 0.64 2 1.5 1.5 - 1.0, 2.0 19 3.5 0.6 0.2–4.0 <0.1–40.0 -
   Production workers in product manufacturingg (♀=17, ♂=149)
     Degrease (♀=14, ♂=136)f 47 39 1.21 0.52 8 13.3 2.8 0.4–26.0 0.1–48.0 58 5.3 1.0 0.6–5.0 <0.1–60.0 0.59
     Weld or Cut 36 19 1.87 0.14 5 11.3 4.0 2.0–10.0 0.5–40.0 26 4.3 1.7 0.5–3.0 <0.1–60.0 0.13
     Solder 14 9 1.63 0.50 2 1.5 - - 1.0, 2.0 12 4.9 0.7 0.1–5.0 <0.1–40.0 -
      Self-reported machine operators in product manufacturingh (♀=15, ♂=49)
       Degrease (♀=13, ♂=43)f 40 31 1.31 0.50 6 17.4 3.8 0.5–48.0 0.1–48.0 15 4.8 2.0 0.8–6.0 0.1–18.5 0.53
       Weld or Cut 36 19 1.87 0.16 4 13.6 7.0 2.3–25.0 0.5–40.0 6 1.7 1.3 1.0–2.0 0.4–4.0 -
       Solder 8 9 0.83 0.86 1 1.0 - - - 4 11.9 3.5 0.7–23.0 0.4–40.0 -
Health Professional
 All who completed modulec (♀=105, ♂=55)
  Anesthesia room work 22 35 0.64 0.09 23 8.6 2.5 0.7–8.0 <0.1–72.0 19 10.0 2.8 0.6–16.0 0.2–48.0 0.90
  Sterilize room work 32 33 0.99 0.96 34 8.9 4.5 0.8–12.0 <0.1–64.8 17 11.5 5.0 1.8–12.0 0.2–42.0 0.54
  Disinfectant use 63 80 0.79 0.03 68 14.3 5.5 1.0–27.5 <0.1–72.0 44 10.8 4.0 1.0–11.0 0.1–58.8 0.41
  X-ray room work 25 29 0.86 0.60 29 10.6 2.0 0.4–18.0 <0.1–40.0 16 3.6 2.0 0.5–4.9 0.1–12.0 0.49
  Lab work 10 24 0.42 0.02 9 10.8 12.0 4.0–15.0 0.3–24.0 13 16.0 14.0 1.2–25.0 0.5–48.0 0.71
   Health aidesi (♀=27, ♂=22)
    Anesthesia room work 11 23 0.49 0.27 3 2.2 1.5 0.1–5.0 0.1–5.0 5 13.9 6.4 4.5–16.0 2.8–40.0 -
    Sterilize room work 48 59 0.81 0.44 13 9.9 5.0 1.0–20.0 <0.1–28.0 13 13.8 6.4 1.8–16.0 0.2–42.0 0.59
    Disinfectant use 56 77 0.72 0.11 15 11.8 2.0 0.8–24.0 0.1–35.0 17 9.9 5.0 1.5–10.0 0.7–42.0 0.98
    X-ray room work 15 18 0.85 0.80 5 14.8 20.0 0.2–24.0 <0.1–30.0 4 1.7 1.9 0.5–2.9 0.1–3.0 -
    Lab work 15 23 0.65 0.48 4 15.5 17.5 9.0–22.0 3.0–24.0 5 12.1 14.0 1.0–20.0 0.5–25.0 -
     Nurse’s aides/orderliesj (♀=20, ♂=13)
      Anesthesia room work 5 23 0.22 0.12 1 0.1 - - - 3 4.6 4.5 2.8–6.4 2.8–6.4 -
      Sterilize room work 30 54 0.56 0.17 6 2.7 0.9 0.1–4.0 <0.1–10.0 7 9.9 5.0 1.0–10.0 0.2–42.0 0.11
      Disinfectant use 45 85 0.53 0.02 9 3.6 1.6 0.7–2.0 0.1–15.0 11 10.2 5.0 1.3–10.0 0.8–42.0 0.17
      X-ray room work 0 31 0 <0.01 0 - - - - 4 1.7 1.9 0.5–2.9 0.1–3.0 -
      Lab work 0 23 0 0.02 0 - - - - 3 11.5 14.0 0.5–20.0 0.5–20.0 -
Janitor/maid
 All who completed modulec (♀=64, ♂=126)
  Clean furniture (♀=54, ♂=88)k 67 47 1.43 0.01 40 10.0 6.7 3.4–11.6 <0.1–56.0 55 7.5 4.6 1.0–9.6 <0.1–40.0 0.05
  Strip floors 36 70 0.51 <0.01 13 4.6 2.9 0.1–6.4 <0.1–15.0 54 5.8 2.3 0.5–9.2 <0.1–24.8 0.65
  Polish furniture 62 40 1.55 0.01 32 7.0 3.1 1.6–6.2 <0.1–40.0 34 3.8 1.9 0.5–5.0 <0.1–24.8 0.06
   Janitor/cleanerl (♀=16, ♂=88)
    Clean furniture (♀=14, ♂=63)k 75 49 1.53 0.05 11 14.6 7.7 4.2–24.8 1.0–56.0 41 8.3 4.8 1.0–10.0 <0.1–40.0 0.11
    Strip floors 50 73 0.68 0.09 6 4.5 4.3 2.3–6.4 <0.1–10.0 41 6.5 2.9 0.6–10.0 0.1–24.8 0.84
    Polish furniture 79 44 1.80 0.02 11 9.3 2.3 2.0–12.0 1.0–40.0 28 4.4 2.1 0.9–7.0 <0.1–24.8 0.13
     Self-reported janitorm (♀=14, ♂=65)
      Clean furniture (♀=12, ♂=47)k 71 45 1.58 0.07 9 16.8 8.0 5.0–24.8 1.0–56.0 27 8.1 5.0 1.0–12.0 0.1–30.0 0.11
      Strip floors 58 72 0.81 0.35 6 4.5 4.3 2.3–6.4 <0.1–10.0 29 6.9 1.7 1.0–9.2 <0.1–24.8 0.81
      Polish furniture 75 40 1.88 0.03 9 8.9 2.3 2.0–4.0 1.0–40.0 19 4.5 1.3 0.4–7.0 <0.1–24.8 0.25

N, number; AM, arithmetic mean; IQR, inter-quartile range; %, percent; U-test, Mann-Whitney Test; hr/wk = hours per week; ♀, female, ♂, male

a

Ratio female:male=%female/%male.

b

N freq>0, number of controls who reported they performed the task and who reported a time spent performing the task greater than zero.

c

All controls who completed the module.

d

Restricted to production jobs (3-digit SOCs: 682,686,688,710,731,751,752,753,754,763,765,766,767,771,772,774,775,782) in product manufacturing industries (3-digit SICs: 302,306,308,313,314,323,327,331,335,341,343,344–346,348–360,362–367,369–373,376,381,382,384,394,395,396,399).

e

Restricted to fabricator/assembler jobs (3-digit SOCs: 771,772,774,775) in the transportation equipment manufacturing industry (3-digit SICs: 370,371,372,376).

f

NCI-SEER NHL subjects were not asked welding and soldering questions.

g

Restricted to production jobs (3-digit SOCs: 681,682,686,710–732,734,746,750–754,764,766,767,772,774,775,782,783) in the product manufacturing industries (3-digit SICs: 305,308,322,329–331,340,342–346,348–357,359,361–363,366,367,370–373,376,379,382,394,399).

h

Restricted to self-reported machine operators in production jobs (3-digit SOCs: 681,731,734,746,751–754,764,766,767,783,872) in product manufacturing industries (3-digit SICs: 305,308,329–331,342,343,345,346,349–351,354–356,359,361,363,371,372,394,399).

i

Restricted to health aide occupations (3-digit SOC 523).

j

Restricted to nurse’s aides and orderlies (4-digit SOC 5236).

k

NEBC subjects were not asked strip floor or polish furniture questions.

l

Restricted to janitors and cleaners (4-digit SOC 5244).

m

Restricted to self-reported janitors, custodians or cleaners in janitors and cleaners (4-digit SOC 5244).