Table 5.

Pairwise comparisons of proportions in participants without suicide attempt history (lower triangle) and with suicidal ideation history (upper triangle) by quarantine sub-periods.

	Pairwise comparisons of proportionsa ( p- valuesb)
Quarantine sub-periods	1.	2.	3.	4.	5.	6.
1. First week pre-extension	–	1.00	0.001	0.005	0.003	< 0.001
2. Second week pre-extension	1.00	–	0.53	0.76	0.73	0.17
3. First extension	0.003	0.29	–	1.00	1.00	1.00
4. Second/third extensions	0.09	1.00	1.00	–	1.00	1.00
5. Fourth extension	0.001	0.17	1.00	1.00	–	1.00
6. Fifth extension	< 0.001	0.08	1.00	1.00	1.00	–

1. First week pre-extension = First week of quarantine before extension, including participants answering during 17–23 March 2020; 2. Second week pre-extension = Second week of quarantine before extension, including participants answering during 24–29 March 2020; 3. First extension = Sub-period after the first quarantine extension, including participants answering during 30 March to 10 April 2020; 4. Second/third extensions = Sub-period after the second quarantine extension and including the third extension, with participants answering during 11 April to 08 May 2020; 5. Fourth extension = Sub-period after the fourth quarantine extension, including participants answering during 09–23 May 2020; 6. Fifth extension = Sub-period after the fifth quarantine extension, including participants answering during 24 May to 04 June 2020.

^aPairwise comparisons of proportions were carried out with Test of equal or given proportions, alternative hypothesis two-sided.

^bExact p-values are informed, except for p-values under 0.001, which are informed as <0.001. Statistically significant p-values are highlighted in bold.