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Journal for Labour Market Research

Table 9 True versus approximated leave spells: Proportional hazard models

From: Does the IAB employment sample reliably identify maternity leave taking? A data reportKann die IAB-Beschäftigtenstichprobe benutzt werden, um Erziehungsurlaub verlässlich zu identifizieren? Ein Daten-Report

Panel A: All

 

All spells

1st spell

 

True, 1st incl.

True, 1st excl.

Approx.

True, 1st incl.

True, 1st excl.

Approx.

 

N = 18.937

N = 17.655

N = 22.219

N = 13.180

N = 12.314

N = 15.137

East

2.108

(0.095)

2.100

(0.100)

1.850

(0.080)

2.456

(0.119)

2.453

(0.124)

2.139

(0.099)

Foreign

1.313

(0.057)

1.339

(0.060)

1.309

(0.046)

1.331

(0.071)

1.366

(0.076)

1.292

(0.057)

Medium-skilled

1.023

(0.029)

1.037

(0.030)

0.990

(0.024)

0.962

(0.034)

0.974

(0.035)

0.954

(0.029)

High-skilled

1.276

(0.066)

1.312

(0.070)

1.163

(0.054)

1.235

(0.077)

1.271

(0.082)

1.180

(0.068)

Log-wage

1.190

(0.029)

1.194

(0.030)

1.204

(0.026)

1.504

(0.053)

1.512

(0.055)

1.448

(0.046)

Full-time

1.221

(0.030)

1.221

(0.031)

1.169

(0.027)

1.214

(0.046)

1.215

(0.048)

1.185

(0.041)

Age

0.940

(0.023)

0.948

(0.024)

0.898

(0.019)

0.876

(0.026)

0.884

(0.028)

0.828

(0.022)

Age2

1.001

0.000

1.001

0.000

1.002

0.000

1.002

(0.001)

1.002

(0.001)

1.003

0.000

ML

12 months

0.960

(0.033)

0.942

(0.033)

0.949

(0.030)

0.953

(0.040)

0.925

(0.040)

0.926

(0.036)

15 months

0.908

(0.033)

0.887

(0.033)

0.915

(0.031)

0.924

(0.041)

0.902

(0.042)

0.913

(0.038)

18 months

0.843

(0.028)

0.828

(0.028)

0.836

(0.026)

0.847

(0.035)

0.830

(0.035)

0.827

(0.031)

36 (18) months

0.779

(0.028)

0.769

(0.028)

0.776

(0.025)

0.778

(0.034)

0.768

(0.035)

0.772

(0.031)

36 (24) months

0.723

(0.024)

0.710

(0.024)

0.737

(0.022)

0.717

(0.029)

0.703

(0.029)

0.724

(0.027)

Panel B: West, Germans

 

All spells

1st spell

 

True, 1st incl.

True, 1st excl.

Approx.

True, 1st incl.

True, 1st excl.

Approx.

 

N = 17.663

N = 16.479

N = 20.226

N = 12.206

N = 11.413

N = 13.692

Medium-skilled

1.034

(0.031)

1.046

(0.033)

1.019

(0.027)

0.971

(0.037)

0.979

(0.038)

0.978

(0.033)

High-skilled

1.307

(0.071)

1.334

(0.075)

1.198

(0.059)

1.264

(0.084)

1.288

(0.089)

1.201

(0.074)

Log-wage

1.157

(0.029)

1.162

(0.030)

1.163

(0.027)

1.481

(0.055)

1.492

(0.058)

1.410

(0.048)

Full-time

1.217

(0.031)

1.213

(0.033)

1.156

(0.028)

1.199

(0.049)

1.190

(0.051)

1.152

(0.044)

Age

0.951

(0.024)

0.958

(0.025)

0.895

(0.020)

0.882

(0.028)

0.889

(0.030)

0.815

(0.023)

Age2

1.001

0.000

1.001

0.000

1.002

(0.000)

1.002

(0.001)

1.002

(0.001)

1.004

0.000

ML

12 months

0.974

(0.034)

0.957

(0.034)

0.957

(0.031)

0.965

(0.041)

0.937

(0.041)

0.935

(0.037)

15 months

0.919

(0.034)

0.900

(0.035)

0.925

(0.032)

0.927

(0.042)

0.907

(0.042)

0.926

(0.040)

18 months

0.852

(0.029)

0.837

(0.029)

0.839

(0.027)

0.852

(0.036)

0.834

(0.036)

0.830

(0.032)

36 (18) months

0.786

(0.029)

0.778

(0.029)

0.771

(0.026)

0.786

(0.035)

0.776

(0.036)

0.774

(0.032)

36 (24) months

0.743

(0.025)

0.730

(0.025)

0.750

(0.023)

0.736

(0.030)

0.721

(0.030)

0.744

(0.028)

Panel C: West, Foreigners

 

All spells

1st spell

 

True, 1st incl.

True, 1st excl.

Approx.

True, 1st incl.

True, 1st excl.

Approx.

 

N = 851

N = 787

N = 1.400

N = 564

N = 522

N = 868

Medium-skilled

0.984

(0.080)

0.984

(0.083)

0.870

(0.056)

0.956

(0.096)

0.974

(0.102)

0.874

(0.072)

High-skilled

0.813

(0.214)

0.981

(0.257)

0.741

(0.180)

0.872

(0.260)

1.157

(0.328)

1.040

(0.274)

Log-wage

1.582

(0.181)

1.547

(0.182)

1.494

(0.130)

1.488

(0.215)

1.417

(0.207)

1.401

(0.152)

Full-time

1.171

(0.131)

1.214

(0.140)

1.172

(0.098)

1.566

(0.219)

1.725

(0.238)

1.446

(0.158)

Age

0.899

(0.075)

0.931

(0.082)

0.932

(0.059)

0.838

(0.086)

0.850

(0.091)

0.921

(0.078)

Age2

1.002

(0.002)

1.001

(0.002)

1.001

(0.001)

1.003

(0.002)

1.003

(0.002)

1.001

(0.002)

ML

12 months

0.701

(0.111)

0.697

(0.116)

0.837

(0.101)

0.683

(0.150)

0.684

(0.156)

0.750

(0.133)

15 months

0.718

(0.126)

0.674

(0.126)

0.790

(0.109)

0.867

(0.261)

0.811

(0.204)

0.668

(0.135)

18 months

0.667

(0.101)

0.673

(0.105)

0.779

(0.089)

0.681

(0.136)

0.679

(0.137)

0.717

(0.116)

36 (18) months

0.628

(0.101)

0.623

(0.103)

0.823

(0.098)

0.602

(0.126)

0.598

(0.127)

0.698

(0.116)

36 (24) months

0.455

(0.068)

0.451

(0.070)

0.607

(0.068)

0.445

(0.087)

0.434

(0.086)

0.487

(0.077)

Panel D: East

 

All spells

      
 

True, 1st incl.

True, 1st excl.

Approx.

      
 

N = 422

N = 388

N = 588

      

Medium-skilled

1.027

(0.255)

1.099

(0.293)

0.810

(0.165)

      

High-skilled

1.319

(0.468)

1.379

(0.511)

0.978

(0.292)

      

Log-wage

2.376

(0.383)

2.412

(0.410)

2.652

(0.372)

      

Full-time

1.292

(0.206)

1.337

(0.219)

1.377

(0.180)

      

Age

0.834

(0.132)

0.834

(0.156)

0.891

(0.102)

      

Age2

1.002

(0.003)

1.002

(0.003)

1.002

(0.002)

      

1994

1.114

(0.116)

1.077

(0.117)

1.034

(0.094)

      
  1. Note: The table compares results from proportional hazard models in the IABS, after imposing my preferred restrictions (“Approx.”), with those in the Pension Register (“true”). Here, I distinguish samples. In the first column, spells that start on the first of a month are included in the sample. In the second column, they are excluded. Robust standard errors in parentheses.
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