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. 2012 Jul 31;2(4):e000960. doi: 10.1136/bmjopen-2012-000960

Table 1.

Distribution of nominal variables (demographic, family-related characteristics and work-related characteristics; numbers and percentages) over the four age groups with results from χ2 tests*

<36 years (n=584) 36–45 years (n=487) 46–55 years (n=492) 55+ years (n=216) χ2 df p Value
Sex
 Male 237 (39.8) 257 (52.0) 288 (57.8) 170 (77.6) 99.5 3 <0.001
 Female 358 (60.2) 237 (48.0) 210 (42.2) 49 (22.4)
Presence of chronic disease
 No 478 (82.1) 372 (77.7) 340 (70.5) 137 (63.4) 38.4 3 <0.001
 Yes 104 (17.9) 107 (22.3) 142 (29.5) 73 (36.6)
Employment category
 Lower-educated non-scientific personnel (eg, secretary, lower technician, catering) 118 (19.9) 128 (25.9) 164 (32.9) 72 (32.9) 57.7 6 <0.001
 Higher-educated non-scientific personnel (eg, librarians, policy, HRM, managers) 138 (23.3) 156 (31.6) 155 (31.1) 57 (25.8)
 Scientific personnel (eg, PhD students, lectures, researchers) 336 (56.8) 210 (42.5) 179 (35.8) 92 (41.6)
Hours worked weekly
 <25 79 (13.3) 99 (20.2) 62 (12.6) 27 (12.2) 22.2 6 0.001
 25–40 326 (55.0) 245 (50.0) 257 (52.0) 104 (47.1)
 >40 188 (31.7) 146 (29.8) 175 (35.4) 90 (41.6)
Type of contract
 Permanent 206 (34.7) 366 (74.2) 440 (88.2) 214 (96.0) 482.3 3 <0.001
 Temporary 387 (65.3) 127 (25.8) 59 (11.8) 9 (4.0)
Married/cohabiting
 No 261 (43.9) 101 (20.4) 85 (17.0) 27 (12.1) 149.2 3 <0.001
 Yes 334 (56.1) 393 (79.6) 414 (83.0) 196 (87.9)
Having children at home
 No 480 (80.7) 171 (34.6) 254 (50.9) 180 (80.7) 295.5 3 <0.001
 Yes 115 (19.3) 323 (65.4) 245 (49.1) 43 (19.3)
Partner's contribution to domestic tasks
 No partner or partner is doing (much) less or the same 518 (87.1) 338 (68.4) 292 (58.5) 90 (40.4) 199.4 3 <0.001
 Partner is doing more 77 (12.9) 156 (31.6) 207 (41.5) 135 (59.6)
Breadwinning
 Partner is breadwinner 149 (25.1) 148 (30.0) 119 (24.0) 15 (6.8) 99.3 6 <0.001
 About the same 100 (16.9) 54 (10.9) 42 (8.5) 6 (2.7)
 Respondent is breadwinner 344 (58.0) 292 (59.1) 335 (67.5) 200 (90.5)
Life event in private life
 No 308 (53.5) 304 (63.6) 316 (67.2) 154 (70.3) 30.2 3 <0.001
 Yes 268 (46.5) 174 (36.4) 154 (32.8) 65 (29.7)
Work-related life event
 No 514 (89.2) 440 (92.1) 433 (92.1) 204 (93.2) 4.8 3 0.19
 Yes 62 (10.8) 38 (7.9) 37 (7.9) 15 (6.8)
Conflict with superiors
 No 392 (65.9) 278 (56.3) 274 (54.9) 143 (64.1) 18.4 3 <0.001
 Yes 203 (34.1) 216 (43.7) 225 (45.1) 80 (35.9)
Conflict with colleagues
 No 404 (37.9) 269 (54.5) 269 (53.9) 133 (59.6) 29.1 3 <0.001
 Yes 191 (32.1) 225 (45.5) 230 (46.1) 90 (40.4)
*

Due to missing data, the number of respondents differs per characteristic.

Reference group for that variable in the logistic regression analysis.

HRM, human resource management.