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. 2013 Sep 3;8(9):e72754. doi: 10.1371/journal.pone.0072754

Table 3. Regressions with life ladder as the dependent variable - the Happiness Monitor survey.

(1) (2) (3) (4) (5) (6)
Real-life friends: 10–20 0.5 0.29 0.26
(0.07)*** (0.07)*** (0.06)***
Real-life friends: 20–30 0.71 0.32 0.29
(0.1)*** (0.1)*** (0.09)***
Real-life friends: 30 or more 0.67 0.36 0.3
(0.12)*** (0.11)*** (0.11)***
Online friends: 1–100 −.31 −.15 −.10
(0.07)*** (0.07)** (0.06)
Online friends: 100–300 −.69 −.18 −.17
(0.09)*** (0.1)* (0.09)*
Online friends: 300 or more −.81 −.21 −.15
(0.13)*** (0.14) (0.13)
Size of network: Real-life friends 0.33 0.19 0.16
(0.04)*** (0.04)*** (0.04)***
Size of network: Online friends −.13 −.04 −.03
(0.02)*** (0.02)** (0.01)**
Logged income 0.43 0.43 0.45 0.45
(0.06)*** (0.06)*** (0.06)*** (0.06)***
Income unknown 0.14 0.13 0.12 0.11
(0.08) (0.08) (0.08) (0.08)
Male −.16 −.17 −.21 −.22
(0.06)*** (0.06)*** (0.06)*** (0.06)***
Age −.08 −.08 −.06 −.06
(0.01)*** (0.01)*** (0.01)*** (0.01)***
Age squared/100 0.1 0.1 0.08 0.08
(0.01)*** (0.01)*** (0.01)*** (0.01)***
Marital status: married 0.75 0.74 0.76 0.76
(0.1)*** (0.1)*** (0.09)*** (0.09)***
Marital status: common-law 0.7 0.7 0.67 0.68
(0.12)*** (0.12)*** (0.11)*** (0.11)***
Marital status: dating 0.65 0.64 0.68 0.67
(0.19)*** (0.19)*** (0.18)*** (0.18)***
Marital status: single 0.29 0.28 0.3 0.29
(0.13)*** (0.12)** (0.12)** (0.12)**
Some post-secondary −.002 −.001 0.02 0.02
(0.09) (0.09) (0.09) (0.09)
University degrees 0.05 0.05 0.07 0.07
(0.08) (0.08) (0.07) (0.07)
Unemployed −1.07 −1.07 −1.03 −1.03
(0.18)*** (0.18)*** (0.17)*** (0.17)***
Exercise per week; hours 0.08 0.08 0.06 0.06
(0.02)*** (0.02)*** (0.02)*** (0.02)***
Volunteer or contribute to charity 0.36 0.36 0.35 0.35
(0.06)*** (0.06)*** (0.06)*** (0.06)***
Average stress levels; 0 to 1 −2.24 −2.24
(0.13)*** (0.13)***
Obs. 4489 4489 4428 4428 4416 4416
Inline graphic 0.03 0.03 0.17 0.17 0.24 0.24

Notes: Standard errors in parentheses. *, **, and *** indicate statistical significance at 90 percent, 95 percent and 99 percent levels.